《硫酸銠化學(xué)分析方法 第2部分：銅、鉛、鋅、鉑、鎳、鐵、鎘和鋁含量的測定 電感耦合等離子體原子發(fā)射光譜法》

1YS/TXXXX.2—202X硫酸銠化學(xué)分析方法第2部分：銅、鉛、鋅、鉑、鎳、鐵、鎘和鋁含量的測定電感耦合等離子體原子發(fā)射光譜法警示——使用本文件的人員應(yīng)有正規(guī)實(shí)驗(yàn)室工作的實(shí)踐經(jīng)驗(yàn)。本文件并未指出所有可能的安全問題。使用者有責(zé)任采取適當(dāng)?shù)陌踩徒】荡胧⒈ＷC符合國家有關(guān)法規(guī)規(guī)定的條件。本文件規(guī)定了采用電感耦合等離子體原子發(fā)射光譜法測定硫酸銠中銅、鉛、鋅、鉑、鎳、鐵、鎘和鋁含量的方法。0.0150%。2規(guī)范性引用文件下列文件中的內(nèi)容通過文中的規(guī)范性引用而構(gòu)成本文件必不可少的條款。其中，注日期的引用文件，僅該日期對應(yīng)的版本適用于本文件；不注日期的引用文件，其最新版本（包括所有的修改單）適用于本文件。GB/T6682分析實(shí)驗(yàn)室用水規(guī)格和試驗(yàn)方法GB/T8170數(shù)值修約規(guī)則與極限數(shù)值的表示和判定3原理試料于聚四氟乙烯消化罐加鹽酸-過氧化氫高溫高壓消解，在稀酸介質(zhì)中，使用電感耦合等離子體原子發(fā)射光譜儀測定硫酸銠中銅、鉛、鋅、鉑、鎳、鐵、鎘和鋁的含量。4試劑或材料除非另有說明，在分析中僅使用確認(rèn)為分析純的試劑和符合GB/T6682規(guī)定的二級水。4.1鹽酸(ρ=1.19g/mL）。4.2硝酸(ρ=1.42g/mL）。4.3過氧化氫（30%，體積分?jǐn)?shù)）。2YS/TXXXX.2—202X4.4鹽酸（1+1）。4.5硝酸（1+1）。4.6鹽酸（1+9）。4.7混合酸：一單位體積硝酸（4.2）、三單位體積鹽酸（4.1）和四單位體積水混合均勻。4.8銅標(biāo)準(zhǔn)貯存溶液：稱取0.1000g金屬銅（wCu≥99.99%）于100mL燒杯中，加入20mL硝酸（4.5蓋上表面皿，低溫加熱溶解，揮發(fā)氮的氧化物，冷卻至室溫，移入100mL容量瓶中，用水稀釋至刻度，混勻。此溶液1mL含1000μg銅。4.9鉛標(biāo)準(zhǔn)貯存溶液：稱取0.1000g金屬鉛（wPb≥99.99%）于100mL燒杯中，加入20mL硝酸（4.5蓋上表面皿，低溫加熱溶解，揮發(fā)氮的氧化物，冷卻至室溫，移入100mL容量瓶中，用水稀釋至刻度，混勻。此溶液1mL含1000μg鉛。蓋上表面皿，低溫加熱溶解，揮發(fā)氮的氧化物，冷卻至室溫，移入100mL容量瓶中，用水稀釋至刻度，混勻。此溶液1mL含1000μg鋅。4.11鉑標(biāo)準(zhǔn)貯存溶液：稱取0.1000g高純鉑（wPt≥99.99%）于100mL燒杯中，加入20mL混合酸（4.7蓋上表面皿，低溫加熱溶解，揮發(fā)氮的氧化物，冷卻至室溫，移入100mL容量瓶中，用水稀釋至刻度，混勻。此溶液1mL含1000μg鉑。4.12鎳標(biāo)準(zhǔn)貯存溶液：稱取0.1000g金屬鎳（wNi≥99.99%）于100mL燒杯中，加入20mL硝酸（4.5蓋上表面皿，低溫加熱溶解，揮發(fā)氮的氧化物，冷卻至室溫，移入100mL容量瓶中，用水稀釋至刻度，混勻。此溶液1mL含1000μg鎳。蓋上表面皿，低溫加熱溶解，揮發(fā)氮的氧化物，冷卻至室溫，移入100mL容量瓶中，用水稀釋至刻度，混勻。此溶液1mL含1000μg鐵。4.14鎘標(biāo)準(zhǔn)貯存溶液：稱取0.1000g金屬鎘（wCd≥99.99%）于100mL燒杯中，加入20mL硝酸（4.5蓋上表面皿，低溫加熱溶解，揮發(fā)氮的氧化物，冷卻至室溫，移入100mL容量瓶中，用水稀釋至刻度，混勻。此溶液1mL含1000μg鎘。蓋上表面皿，低溫加熱溶解，揮發(fā)氮的氧化物，冷卻至室溫，移入100mL容量瓶中，用水稀釋至刻度，混勻。此溶液1mL含1000μg鋁。4.16銅、鉛、鋅、鉑、鎳、鐵、鎘、鋁混合標(biāo)準(zhǔn)溶液：分別移取1.00mL銅、鉛、鋅、鉑、鎳、鐵、鎘、鋁標(biāo)準(zhǔn)貯存溶液（4.8～4.15）于100mL容量瓶中，加入5mL鹽酸（4.6），用水稀釋至刻度，混勻。此溶液1mL含銅、鉛、鋅、鉑、鎳、鐵、鎘、鋁各10μg。4.17氬氣（體積分?jǐn)?shù)≥99.99。5儀器設(shè)備5.1儀器電感耦合等離子體原子發(fā)射光譜儀。在儀器最佳工作條件下，凡能達(dá)到下列指標(biāo)者均可使用。3YS/TXXXX.2—202X——分辨率：200nm時(shí)光學(xué)分辨率不大于0.008nm；400nm時(shí)光學(xué)分辨率不大于0.020nm?！獌x器穩(wěn)定性：在儀器的最佳工作條件下，用1.0μg/mL的銅標(biāo)準(zhǔn)溶液測量11次，其發(fā)射強(qiáng)度的相對標(biāo)準(zhǔn)偏差不超過2.0%。5.2分析譜線各元素的推薦分析譜線見表1。表1元素推薦分析譜線Ni6樣品樣品儲存于密閉容器內(nèi)，用時(shí)現(xiàn)稱。7試驗(yàn)步驟7.1試料稱取0.50g樣品（6），精確至0.0001g。7.2平行試驗(yàn)平行做兩份試驗(yàn)。7.3空白試驗(yàn)隨同試料（7.1）做空白試驗(yàn)。7.4測定7.4.1將試料（7.1）置于聚四氟乙烯消化罐中，加入15mL鹽酸（4.1）、5mL過氧化氫（4.3），加蓋并鎖緊消化罐，置于烘箱中于（150±5）℃加熱消解5h，取出，冷卻，轉(zhuǎn)入50mL容量瓶中，以水稀釋至刻度，混勻。7.4.2在選定的儀器工作條件下，于電感耦合等離子體原子發(fā)射光譜儀上推薦的分析譜線處測定試液中待測元素的發(fā)射強(qiáng)度，從工作曲線上查得待測元素的質(zhì)量濃度。7.5工作曲線的繪制7.5.1于一組50mL的容量瓶中，加入3mL混合酸（4.7依次移取銅、鉛、鋅、鉑、鎳、鐵、鎘、鋁混合標(biāo)準(zhǔn)溶液（4.16）0mL、0.50mL、2.50mL、5.00mL、10.00mL、20.00mL，以水稀釋至刻度，混4YS/TXXXX.2—202X7.5.2將系列標(biāo)準(zhǔn)溶液引入電感耦合等離子體原子發(fā)射光譜儀中，選擇儀器合適的分析條件，在待測元素選定的波長處，測量標(biāo)準(zhǔn)溶液中各元素的強(qiáng)度，以質(zhì)量濃度為橫坐標(biāo)，發(fā)射強(qiáng)度為縱坐標(biāo)，繪制工作曲線。工作曲線的線性相關(guān)系數(shù)應(yīng)不小于0.9995。8試驗(yàn)數(shù)據(jù)處理雜質(zhì)含量以質(zhì)量分?jǐn)?shù)wx計(jì)，按公式（1）計(jì)算：wx=×100%………………（1）式中：Px——分析試液中待測元素的質(zhì)量濃度，單位為微克每毫升(μg/mLP0——空白試液中待測元素的質(zhì)量濃度，單位為微克每毫升(μg/mLV——待測試液的體積，單位為毫升（mL）；m——試料的質(zhì)量，單位為克（g）。計(jì)算結(jié)果表示到小數(shù)點(diǎn)后第四位，數(shù)值修約按照GB/T8170的規(guī)定執(zhí)行。9精密度9.1重復(fù)性在重復(fù)性條件下獲得的兩次獨(dú)立測試結(jié)果的測定值，在表2給出的平均值范圍內(nèi)，這兩個(gè)測試結(jié)果的絕對差值不超過重復(fù)性限（r），超過重復(fù)性限（r）的情況不超過5%，重復(fù)性限（r）按表2數(shù)據(jù)采用線性內(nèi)插法或外延法求得。精密度試驗(yàn)統(tǒng)計(jì)數(shù)據(jù)參見附錄A。表2重復(fù)性限wCu/(%)wPb/(%)wZn/(%)wPt/(%)wNi/(%)wFe/(%)wCd/(%)5YS/TXXXX.2—202XwAl/(%)9.2再現(xiàn)性在再現(xiàn)性條件下獲得的兩次獨(dú)立測試結(jié)果的測定值，在表3給出的平均值范圍內(nèi)，這兩個(gè)測試結(jié)果的絕對差值不超過再現(xiàn)性限（R），超過再現(xiàn)性限（R）的情況不超過5%，再現(xiàn)性限（R）按表3數(shù)據(jù)采用線性內(nèi)插法或外延法求得。表3再現(xiàn)性限wCu/(%)R/(%)wPb/(%)R/(%)wZn/(%)R/(%)wPt/(%)R/(%)wNi/(%)R/(%)wFe/(%)R/(%)wCd/(%)R/(%)wAl/(%)R/(%)10試驗(yàn)報(bào)告試驗(yàn)報(bào)告應(yīng)包括以下內(nèi)容：——試驗(yàn)對象；——本文件編號；——分析結(jié)果及其表示；——與基本分析步驟的差異；——觀測到的異常現(xiàn)象；——試驗(yàn)日期。6YS/TXXXX.2—202X附錄A精密度試驗(yàn)統(tǒng)計(jì)數(shù)據(jù)精密度數(shù)據(jù)是在2023年由15家實(shí)驗(yàn)室對銅、鉛、鋅、鉑、鎳、鐵、鎘和鋁元素含量的3個(gè)不同水平樣品進(jìn)行共同試驗(yàn)確定的。每家實(shí)驗(yàn)室對每個(gè)水平的銅、鉛、鋅、鉑、鎳、鐵、鎘和鋁含量在重復(fù)性條件下獨(dú)立測定7次。測定的統(tǒng)計(jì)數(shù)據(jù)見表A.1。表A.1精密度試驗(yàn)統(tǒng)計(jì)數(shù)據(jù)元素水平數(shù)實(shí)驗(yàn)室w/%n=7）1234567Cu110.00120.00120.00110.00110.00120.00110.001120.00100.00100.00100.00100.00090.00090.000930.00110.00120.00110.00110.00110.00110.001140.00130.00140.00130.00130.00130.00130.001350.00100.00090.00090.00080.00100.00090.000860.00110.00120.00130.00120.00120.00110.001270.00130.00130.00140.00130.00120.00120.001280.00100.00090.00110.00100.00100.00090.001090.00120.00120.00110.00110.00110.00110.00110.00140.00110.00110.00110.00110.00110.00110.00120.00120.00110.00110.00120.00110.00110.00100.00130.00110.00110.00120.00110.00110.00120.00130.00120.00120.00120.00130.00120.00110.00090.00110.00110.00120.00110.00110.00120.00110.00120.00120.00120.00130.0011210.00120.00120.00110.00110.00120.00110.001120.00100.00100.00100.00100.00090.00090.000930.00110.00120.00110.00110.00110.00110.001140.00130.00140.00130.00130.00130.00130.001350.00100.00090.00090.00080.00100.00090.000860.00110.00120.00130.00120.00120.00110.001270.00130.00130.00140.00130.00120.00120.001280.00100.00090.00110.00100.00100.00090.001090.00120.00120.00110.00110.00110.00110.00110.00140.00110.00110.00110.00110.00110.00110.00120.00120.00110.00110.00120.00110.00110.00100.00130.00110.00110.00120.00110.00110.00120.00130.00120.00120.00120.00130.00120.00110.00090.00110.00110.00120.00110.00110.00120.00110.00120.00120.00120.00130.00117YS/TXXXX.2—202X表A.1精密度試驗(yàn)統(tǒng)計(jì)數(shù)據(jù)（續(xù)）元素水平數(shù)實(shí)驗(yàn)室w/%n=7）1234567Cu310.01340.01370.01350.01350.01350.01340.013520.01400.01430.01400.01390.01400.01420.013830.01390.01360.01340.01350.01360.01360.013640.01450.01470.01470.01450.01450.01470.014550.01380.01310.01340.01310.01340.01390.013560.01350.01340.01340.01360.01340.01320.013570.01380.01380.01320.01310.01420.01410.014280.01400.01300.01390.01390.01330.01320.014090.01300.01290.01290.01370.01370.01360.01280.01390.01400.01330.01390.01320.01310.01410.01380.01350.01410.01300.01310.01390.01320.01410.01450.01360.01360.01410.01400.01470.01440.01420.01420.01480.01500.01490.01410.01480.01420.01490.01420.01410.01490.01480.01370.01310.01410.01330.01320.01380.0140Pb110.00120.00110.00110.00110.00110.00110.001120.00100.00110.00100.00100.00100.00110.001030.00120.00130.00100.00110.00100.00110.001140.00100.00120.00130.00120.00120.00110.001250.00100.00090.00090.00080.00100.00090.000860.00110.00110.00120.00110.00110.00130.001170.00110.00130.00140.00130.00120.00120.001280.00100.00090.00110.00100.00100.00090.001090.00120.00120.00110.00110.00110.00110.00110.00140.00120.00130.00140.00110.00120.00130.00120.00120.00110.00110.00120.00110.00100.00100.00130.00110.00110.00120.00110.00110.00120.00130.00120.00120.00120.00130.00120.00110.00110.00130.00120.00120.00110.00110.00120.00110.00120.00120.00120.00130.0011210.00490.00450.00480.00460.00450.00460.004520.00560.00560.00560.00570.00560.00550.005530.00390.00390.00410.00410.00400.00410.004040.00490.00490.00500.00500.00500.00500.005050.00410.00480.00430.00500.00460.00420.004860.00480.00460.00460.00460.00450.00460.004370.00450.00500.00510.00500.00460.00500.004680.00480.00470.00490.00480.00500.00460.00438YS/TXXXX.2—202X表A.1精密度試驗(yàn)統(tǒng)計(jì)數(shù)據(jù)（續(xù)）元素水平數(shù)實(shí)驗(yàn)室w/%n=7）1234567Pb290.00440.00480.00430.00410.00450.00450.00430.00450.00470.00440.00470.00430.00460.00430.00450.00480.00440.00480.00440.00480.00420.00460.00440.00430.00460.00420.00470.00450.00450.00450.00430.00420.00490.00470.00430.00470.00430.00430.00480.00420.00450.00440.00450.00490.00480.00440.00430.00500.0046310.01320.01380.01340.01350.01340.01370.013720.01370.01390.01400.01360.01400.01340.013730.01350.01340.01370.01370.01370.01350.013440.01500.01510.01510.01520.01510.01510.015250.01310.01350.01410.01370.01400.01390.013760.01310.01360.01320.01330.01320.01350.013570.01410.01470.01390.01370.01390.01430.014280.01290.01380.01370.01270.01280.01300.013190.01450.01420.01480.01410.01490.01460.01420.01410.01350.01320.01360.01400.01400.01410.01380.01350.01380.01300.01310.01390.01340.01410.01380.01390.01350.01410.01360.01390.01380.01340.01420.01320.01410.01320.01410.01380.01420.01390.01420.01410.01320.01340.01370.01350.01410.01350.01370.01380.0140Zn110.00120.00110.00120.00110.00120.00110.001220.00110.00110.00110.00120.00110.00110.001230.00160.00160.00160.00150.00160.00160.001540.00130.00130.00130.00130.00140.00130.001450.00120.00110.00120.00110.00130.00120.001160.00110.00120.00110.00110.00120.00130.001270.00120.00120.00130.00120.00110.00120.001280.00100.00110.00110.00120.00110.00100.001190.00120.00120.00110.00110.00110.00110.00110.00110.00120.00130.00110.00130.00120.00130.00100.00110.00130.00120.00110.00120.00110.00120.00130.00120.00120.00110.00130.00120.00120.00130.00120.00120.00120.00130.00120.00130.00110.00130.00110.00110.00120.00120.00110.00120.00130.00120.00110.00110.0013210.00460.00450.00440.00470.00480.00450.00479YS/TXXXX.2—202X表A.1精密度試驗(yàn)統(tǒng)計(jì)數(shù)據(jù)（續(xù)）元素水平數(shù)實(shí)驗(yàn)室w/%n=7）1234567Zn220.00530.00510.00520.00530.00520.00520.005130.00460.00450.00480.00460.00450.00450.004840.00510.00510.00510.00510.00510.00520.005150.00420.00440.00450.00480.00460.00500.004860.00470.00440.00460.00450.00490.00460.004770.00450.00500.00510.00500.00460.00500.004680.00480.00450.00470.00460.00450.00470.005190.00420.00450.00480.00410.00440.00460.00450.00420.00470.00410.00470.00470.00460.00470.00450.00480.00490.00430.00420.00430.00480.00470.00460.00480.00460.00420.00470.00450.00490.00480.00410.00430.00440.00420.00490.00450.00450.00460.00430.00470.00450.00490.00480.00470.00430.00500.00450.00490.0047310.01350.01380.01350.01340.01320.01320.013720.01520.01550.01560.01520.01540.01520.015730.01380.01360.01350.01350.01340.01340.013540.01410.01420.01420.01420.01420.01420.014450.01400.01360.01350.01390.01420.01340.013960.01340.01360.01330.01320.01300.01310.013570.01450.01390.01380.01420.01380.01400.013980.01350.01280.01370.01320.01320.01290.012890.01390.01400.01380.01410.01410.01480.01420.01380.01410.01350.01380.01370.01400.01340.01380.01420.01410.01390.01320.01350.01340.01380.01370.01320.01420.01360.01400.01380.01420.01420.01380.01350.01400.01390.01370.01420.01380.01410.01420.01350.01390.01350.01470.01450.01420.01450.01390.01380.0142Pt110.00100.00120.00120.00110.00110.00120.001120.00120.00120.00110.00100.00100.00110.001130.00090.00110.00100.00100.00110.00120.001040.00120.00110.00120.00130.00110.00120.001250.00120.00110.00120.00110.00130.00120.001160.00100.00110.00120.00110.00120.00120.001270.00130.00110.00120.00110.00110.00120.001280.00120.00110.00100.00120.00120.00110.001190.00110.00120.00120.00110.00110.00120.0011YS/TXXXX.2—202X表A.1精密度試驗(yàn)統(tǒng)計(jì)數(shù)據(jù)（續(xù)）元素水平數(shù)實(shí)驗(yàn)室w/%n=7）1234567Pt10.00120.00130.00130.00110.00130.00120.00130.00110.00110.00130.00120.00110.00120.00110.00120.00130.00120.00120.00110.00130.00120.00120.00130.00120.00120.00120.00130.00120.00130.00110.00130.00110.00110.00120.00120.00130.00110.00120.00120.00130.00110.0013210.00460.00490.00460.00470.00460.00470.004620.00490.00500.00520.00500.00520.00510.005030.00410.00380.00390.00400.00410.00390.004140.00500.00500.00500.00500.00500.00500.005050.00470.00450.00460.00470.00500.00480.004760.00470.00480.00450.00470.00460.00460.004570.00480.00490.00500.00450.00470.00490.004880.00470.00460.00500.00470.00480.00500.004590.00480.00450.00410.00470.00450.00460.00450.00450.00410.00420.00480.00450.00480.00470.00490.00450.00430.00410.00430.00480.00470.00470.00460.00450.00450.00490.00470.00450.00420.00420.00400.00410.00430.00410.00420.00480.00450.00460.00470.00420.00410.00500.00450.00480.00490.00510.00420.00480.0046310.01370.01380.01350.01320.01350.01350.013520.01460.01490.01470.01500.01450.01490.014730.01470.01480.01360.01420.01420.01410.014440.01490.01500.01500.01500.01500.01500.014950.01420.01350.01360.01420.01410.01390.013960.01340.01360.01330.01300.01340.01330.013370.01400.01320.01410.01410.01410.01420.013280.01420.01390.01370.01360.01390.01350.013690.01370.01400.01390.01400.01380.01380.01420.01480.01500.01420.01480.01510.01480.01440.01420.01390.01380.01370.01340.01410.01350.01380.01360.01320.01410.01390.01380.01410.01420.01440.01450.01480.01410.01400.01430.01370.01380.01350.01410.01360.01390.01350.01420.01350.01420.01340.01390.01400.0141Ni110.00460.00490.00460.00470.00460.00470.004620.00490.00500.00520.00500.00520.00510.0050YS/TXXXX.2—202X表A.1精密度試驗(yàn)統(tǒng)計(jì)數(shù)據(jù)（續(xù)）元素水平數(shù)實(shí)驗(yàn)室w/%n=7）1234567Ni130.00410.00380.00390.00400.00410.00390.004140.00500.00500.00500.00500.00500.00500.005050.00470.00450.00460.00470.00500.00480.004760.00470.00480.00450.00470.00460.00460.004570.00480.00490.00500.00450.00470.00490.004880.00470.00460.00500.00470.00480.00500.004590.00480.00450.00410.00470.00450.00460.00450.00450.00410.00420.00480.00450.00480.00470.00490.00450.00430.00410.00430.00480.00470.00470.00460.00450.00450.00490.00470.00450.00420.00420.00400.00410.00430.00410.00420.00480.00450.00460.00470.00420.00410.00500.00450.00480.00490.00510.00420.00480.0046210.00460.00490.00460.00470.00460.00470.004620.00490.00500.00520.00500.00520.00510.005030.00410.00380.00390.00400.00410.00390.004140.00500.00500.00500.00500.00500.00500.005050.00470.00450.00460.00470.00500.00480.004760.00470.00480.00450.00470.00460.00460.004570.00480.00490.00500.00450.00470.00490.004880.00470.00460.00500.00470.00480.00500.004590.00480.00450.00410.00470.00450.00460.00450.00450.00410.00420.00480.00450.00480.00470.00490.00450.00430.00410.00430.00480.00470.00470.00460.00450.00450.00490.00470.00450.00420.00420.00400.00410.00430.00410.00420.00480.00450.00460.00470.00420.00410.00500.00450.00480.00490.00510.00420.00480.0046310.01370.01380.01350.01320.01350.01350.013520.01460.01490.01470.01500.01450.01490.014730.01470.01480.01360.01420.01420.01410.014440.01490.01500.01500.01500.01500.01500.014950.01420.01350.01360.01420.01410.01390.013960.01340.01360.01330.01300.01340.01330.013370.01400.01320.01410.01410.01410.01420.013280.01420.01390.01370.01360.01390.01350.013690.01370.01400.01390.01400.01380.01380.01420.01480.01500.01420.01480.01510.01480.0144YS/TXXXX.2—202X表A.1精密度試驗(yàn)統(tǒng)計(jì)數(shù)據(jù)（續(xù)）元素水平數(shù)實(shí)驗(yàn)室w/%n=7）1234567Ni30.01420.01390.01380.01370.01340.01410.01350.01380.01360.01320.01410.01390.01380.01410.01420.01440.01450.01480.01410.01400.01430.01370.01380.01350.01410.01360.01390.01350.01420.01350.01420.01340.01390.01400.0141Fe110.00110.00110.00110.00120.00110.00110.001120.00100.00100.00100.00100.00100.00100.001030.00140.00140.00140.00140.00140.00140.001440.00140.00150.00150.00150.00140.00150.001550.00120.00120.00120.00130.00110.00120.001160.00110.00120.00110.00110.00120.00130.001170.00120.00110.00130.00110.00110.00120.001280.00120.00110.00130.00120.00110.00120.001190.00120.00120.00130.00110.00130.00110.00100.00130.00120.00130.00120.00110.00120.00130.00120.00110.00130.00110.00120.00110.00120.00100.00130.00120.00110.00110.00120.00120.00120.00110.00120.00130.00120.00130.00110.00130.00100.00130.00120.00110.00120.00120.00120.00120.00130.00110.00110.00110.0013210.00490.00470.00470.00450.00460.00460.004620.00490.00490.00480.00490.00490.00480.004830.00570.00570.00600.00580.00570.00570.006040.00520.00530.00520.00520.00530.00520.005350.00480.00440.00470.00480.00490.00500.004560.00470.00440.00460.00450.00490.00460.004670.00460.00500.00510.00490.00490.00500.004680.00480.00510.00470.00460.00490.00470.005190.00520.00450.00480.00510.00460.00460.00490.00490.00470.00460.00470.00500.00490.00470.00450.00480.00490.00490.00500.00510.00480.00500.00460.00480.00460.00490.00470.00470.00490.00480.00510.00440.00490.00450.00490.00500.00420.00460.00420.00470.00500.00490.00480.00450.00440.00500.00500.00490.0047310.01370.01340.01350.01350.01340.01350.013520.01410.01440.01450.01420.01440.01420.014630.01510.01360.01350.01350.01350.01350.0136YS/TXXXX.2—202X表A.1精密度試驗(yàn)統(tǒng)計(jì)數(shù)據(jù)（續(xù)）元素水平數(shù)實(shí)驗(yàn)室w/%n=7）1234567Fe340.01540.01550.01550.01550.01560.01560.015650.01500.01460.01450.01490.01430.01440.014360.01360.01350.01350.01370.01350.01360.013670.01450.01490.01420.01420.01380.01400.013980.01350.01380.01410.01420.01420.01390.013890.01390.01400.01480.01410.01450.01480.01420.01480.01410.01450.01400.01470.01400.01440.01440.01420.01410.01390.01520.01350.01420.01380.01420.01490.01420.01360.01400.01380.01420.01430.01380.01420.01400.01360.01370.01420.01380.01320.01420.01350.01390.01400.01470.01450.01390.01450.01390.01380.0142Cd110.00120.00110.00110.00120.00120.00120.001220.00100.00110.00100.00100.00100.00100.001030.00100.00100.00100.00100.00100.00100.001040.00140.00150.00150.00150.00140.00150.001550.00130.00120.00110.00110.00130.00110.001260.00110.00110.00120.00120.00110.00120.001270.00110.00120.00110.00120.00130.00130.001280.00120.00110.00100.00120.00100.00100.001190.00130.00120.00120.00110.00120.00110.00110.00110.00120.00130.00120.00120.00110.00130.00120.00110.00130.00110.00110.00110.00100.00110.00110.00120.00120.00110.00130.00130.00120.00130.00130.00120.00120.00130.00120.00130.00110.00100.00110.00120.00120.00120.00120.00120.00130.00120.00120.00110.0011210.00440.00480.00450.00470.00460.00470.004620.00480.00480.00470.00490.00480.00470.004730.00400.00400.00400.00400.00400.00400.004040.00520.00530.00520.00520.00530.00520.005350.00480.00440.00430.00480.00500.00470.004860.00450.00490.00450.00460.00460.00470.004570.00460.00500.00480.00510.00440.00500.004780.00480.00490.00510.00500.00460.00470.005190.00500.00450.00480.00430.00470.00460.00480.00480.00470.00410.00470.00430.00450.00470.00450.00480.00490.00450.00520.00440.0048YS/TXXXX.2—202X表A.1精密度試驗(yàn)統(tǒng)計(jì)數(shù)據(jù)（續(xù)）元素水平數(shù)實(shí)驗(yàn)室w/%n=7）1234567Cd20.00470.00460.00440.00410.00490.00470.00450.00490.00480.00410.00430.00440.00420.00490.00450.00430.00460.00490.00470.00470.00490.00480.00470.00410.00420.00450.00490.0047310.01310.01380.01340.01350.01350.01370.013720.01400.01430.01400.01400.01400.01420.013730.01380.01350.01360.01350.01350.01350.013540.01540.01550.01550.01550.01560.01560.015650.01400.01320.01410.01400.01420.01330.013960.01320.01380.01350.01360.01370.01380.013870.01480.01390.01320.01440.01350.01400.013980.01310.01390.01420.01310.01420.01430.013990.01380.01420.01360.01410.01410.01420.01490.01390.01410.01420.01370.01370.01400.01350.01330.01420.01410.01390.01320.01350.01390.01380.01370.01320.01420.01330.01400.01410.01420.01410.01400.01350.01350.01360.01370.01420.01420.01350.01420.01360.01390.01360.01400.01500.01400.01400.01500.01400.0142Al110.00110.00130.00100.00110.00120.00110.001120.