電感耦合等離子體發(fā)射光譜儀測(cè)試報(bào)告

1、電感耦合等離子體發(fā)射光譜儀測(cè)試報(bào)告一、精密度測(cè)試對(duì)濃度分別為1mg/L的銅、鋅、鉛、鎘、鐵、錳、鎳、鉻、銻 混合標(biāo)準(zhǔn)溶液進(jìn)行10次重復(fù)性測(cè)定，其相對(duì)標(biāo)準(zhǔn)偏差均小于 0.5%, 符合RSDV0.5%的要求。詳細(xì)數(shù)據(jù)見(jiàn)表1。表1精密度測(cè)試數(shù)據(jù)單位：mg/LCuZnPbCdFeMnNiCrSb10.9840.9921.0040.9971.0131.0061.0050.9960.99820.9820.9980.9990.9931.0011.0090.9970.9970.99230.9810.9950.9990.9881.0101.0021.0010.9931.00340.9930.9991.0050.

2、9881.0111.0011.0011.0030.99250.9810.9881.0050.9961.0201.0090.9971.0051.00360.9861.0031.0060.9901.0140.9991.0050.9980.99270.9880.9941.0050.9971.0161.0050.9980.9970.99480.9821.0041.0100.9911.0101.0020.9971.0010.99790.9810.9991.0040.9831.0111.0071.0080.9991.002100.9890.9981.0060.9891.0151.0081.0070.999

3、0.995均值0.98470.99701.00430.99121.01211.00481.00160.99880.9968RSD0.42%0.49%0.33%0.46%0.50%0.36%0.44%0.35%0.45%二、穩(wěn)定性測(cè)試對(duì)濃度分別為1mg/L的銅、鋅、鉛、鎘、鐵、錳、鎳、鉻、銻 混合標(biāo)準(zhǔn)溶液進(jìn)行4小時(shí)連續(xù)測(cè)定，每種元素取得100個(gè)測(cè)試數(shù)據(jù), 其相對(duì)標(biāo)準(zhǔn)偏差均小于 2.0%，符合RSDV2.0%的要求。詳細(xì)數(shù)據(jù)見(jiàn) 表2。i表2穩(wěn)定性測(cè)試數(shù)據(jù)單位：mg/LCuZnPbCdFeMnNiCrSb均值1.0001.0061.0081.0030.9971.0191.0221.0371.008R

4、SD0.94%0.91%0.59%0.56%0.53%0.94%0.45%1.59%0.61%三、準(zhǔn)確度測(cè)試1、有證標(biāo)準(zhǔn)物質(zhì)測(cè)試對(duì)購(gòu)自環(huán)境保護(hù)部標(biāo)準(zhǔn)樣品研究所的有證標(biāo)準(zhǔn)樣品進(jìn)行測(cè)試，測(cè)試項(xiàng)目包括：銅、鋅、鉛、鎘、鐵、錳、鎳、鉻、銻、砷、汞、硒、磷。其測(cè)定結(jié)果均在相應(yīng)的準(zhǔn)確度范圍內(nèi)，詳細(xì)數(shù)據(jù)見(jiàn)表3。表3準(zhǔn)確度測(cè)試數(shù)據(jù)有證標(biāo)準(zhǔn)物質(zhì)測(cè)定結(jié)果(mg/L)相對(duì)誤差REi編號(hào)保證值(mg/L)Cu2009251.69 ±.061.68-0.59%ZnP 2009250.494 ±.025P 0.480-2.83%Pb2009251.68 ±.061.722.38%Cd2009

5、250.150 ±.0060.149-0.67%Fe 2024170.34 ±.018P 0.352.94%Mn2025161.18 ±.051.180%Ni2009250.997 ±.0480.9990.20%CrP 2009251.51 ±.06r 1.47-2.65%Sb2049051.24 ±.261 1.20-3.23%As2004300.349 ±.0250.342-2.01%Hg20202920.4 ±.6 (/L)19.5(pg/L)-4.41%Se20371126.2 ±.4 (/L)25.0(pg/L)-4.58%P2034111.53 ±.081.51-1.31%2、按照儀器性能指標(biāo)的要求，對(duì)1卩g/L的鎘和10卩g/L的鉛進(jìn)行準(zhǔn)確度測(cè)試，其結(jié)果分別為0.968卩g/L和10.14卩g/L ,相對(duì)誤差分別為-3.2% 和 1.4%。四、加標(biāo)回收測(cè)試對(duì)1卩g/L的鎘和10卩g/L的鉛進(jìn)行加標(biāo)回收測(cè)試，得到鎘的加 標(biāo)回收率為107.2%、鉛為104.8%，均符合加標(biāo)回收率不低于90%的 要求。表4