火焰原子吸收測(cè)Ca含量方法驗(yàn)證報(bào)告

1、火焰原子吸收測(cè)Ca含量方法驗(yàn)證報(bào)告一、實(shí)驗(yàn)的目的驗(yàn)證在火焰原子吸收測(cè)定 Ca含量過程中，碳酸鋰基體對(duì)測(cè)定結(jié) 果的影響.通過考察標(biāo)準(zhǔn)曲線法與標(biāo)準(zhǔn)加入法測(cè)試樣品的精密度和準(zhǔn) 確度,得出實(shí)驗(yàn)結(jié)論.二、實(shí)驗(yàn)儀器及實(shí)驗(yàn)條件普析通用TAS-990火焰原子吸收分光光度計(jì)儀器參數(shù)如下：波長(zhǎng)（nm）光譜帶寬（nnj）燈電流（mA濾波系數(shù)積分時(shí)間（秒）燃燒器高度（mm422.70.433.036火焰類型Air(Mpa,mL/min)C2H?(Mpa,mL/min)N2O (Mpa, mL/min)Air-C 2f貧燃焰0.240.05 , 1300三、實(shí)驗(yàn)人員賈貴斌、黃小梅、尤停、賀行民 四、實(shí)驗(yàn)過程1 、標(biāo)準(zhǔn)溶

2、液的配制. 標(biāo)準(zhǔn)曲線法：Oppm、0.5ppm、I.Oppm、2.0ppm 標(biāo)準(zhǔn)加入曲線法:0.013ppm、0.502 ppm 1.049ppm 1.592 ppm （標(biāo)準(zhǔn)溶液含有20mg/ml碳酸鋰基體，通過標(biāo)準(zhǔn)加入法測(cè)得碳酸 理基體中Ca的含量為0.013ppm）2 、試樣測(cè)定. 精密度考察分別對(duì)兩個(gè)不同批次（TSL20150405、TSL20150406的樣品進(jìn)行測(cè)定， 其中TSL20150405批次樣品做12個(gè)平行樣;TSL20150406做6個(gè)平行 樣,并做空白對(duì)照試驗(yàn). 加標(biāo)測(cè)回收率考察方法的準(zhǔn)確性在兩個(gè)批次的樣品中分別加入 0.2ppm、0.5ppm標(biāo)準(zhǔn)溶液，分別用兩 種方法測(cè)

3、定其回收率.五、數(shù)據(jù)處理1、方法精密度考察批號(hào)質(zhì)量標(biāo)準(zhǔn)加入曲線法標(biāo)準(zhǔn)曲線法濃度百分含 量平均值RSD%濃度百分含量平均值RSD%空白0.2320.1244.99950.9700.00370.6270.00254.99990.933 :0.00350.6130.00244.99960.9250.00350.6030.00245.00070.917 I0.00340.5930.00235.00010.9100.00340.5950.0024TSL20150405)5.00030.919 10.00340.00363.650.5940.00230.00242.90 5.00090.9630.0037

4、0.6120.00245.00000.9610.00360.6170.00254.99940.9980.00380.6260.00254.99980.9420.00360.5880.00234.99980.9410.00350.5880.00235.00000.9580.00360.6070.00245.00080.977 10.00370.6190.00254.99921.0240.00400.6570.0027TSL20150406、5.00100.9820.00370.00392.800.6280.00250.00263.52)4.99981.0290.00400.6590.00275.

5、00031.0020.00380.6430.00265.00061.0130.00390.6640.00272、方法準(zhǔn)確度考察批號(hào)標(biāo)準(zhǔn)加入曲線法標(biāo)準(zhǔn)曲線法初始濃加標(biāo)里加標(biāo)后回收率初始濃加標(biāo)里加標(biāo)后回收率TSL201504050.度700.2001.濃度96.001 0.度270.2000.濃度6L000.9330.9250.2000.2001.280 11.197 1：73.50 0.636.00 0.613030.2000.2000.802 90.782 89L50).500.9170.2001.170 1：26.50 0.5930.2000.777 9：L000.9100.2001.159

6、 1：24.50 0.5950.2000.748 765.500.9190.2001.220 150.50 0.5940.2000.778 92L000.9630.9610.2000.2001.257 11.224 1：17.00 0.631.50 0.612170.2000.2000.807 970.786 87.50L500.9980.2001.212 1()7.00 0.6：260.2000.779 765.500.9420.9410.2000.2001.163 11.189 1：0.50 0.5(24.00 0538380.2000.2000.768 9(0.773 92).00L50

7、0.9580.2001.229 1：35.50 0.6070.2000.787 9().00TSL201504060.9771.0240.2000.2001.246 1：1.269 1：34.50 0.622.50 0619570.2000.2000.809 950.835 895.00).000.9820.2001.269 113.50 0.6：281 0.2000.802 8：7.001.0291.0020.2000.2001.286 1：1.235 128.50 066.50 0659430.2000.2000.848 90.820 88L50k501.0130.2001.311 119

8、.00 06640.2000.847 9-.50批號(hào)標(biāo)準(zhǔn)加入曲線法標(biāo)準(zhǔn)曲線法初始濃加標(biāo)里加標(biāo)后回收率初始加標(biāo)里加標(biāo)后回收率0.4850.5001.097122.400.3140.5000.74385.900.4670.5001.093125.300.3070.5000.73986.500.4630.5001.119131.300.3020.5000.75590.700.4590.5001.083124.900.2970.5000.73788.100.4550.5001.136136.200.2980.5000.76192.70TSL201504050.4600.5001.089125.900.

9、2970.5000.74088.600.4820.5001.114126.500.3060.5000.76591.800.4810.5001.034110.700.3090.5000.69376.900.4990.5001.087117.600.3130.5000.72582.400.4710.500 I1.022110.200.2940.5000.70281.600.4710.500 :1.023110.500.2940.5000.69379.800.4790.5001.130130.200.3040.5000.77093.300.4890.5001.118125.900.3100.5000.76691.300.5120.5001.145126.600.3290.5000.81497.10TSL201504060.4910.5001.118125.400.3140.5000.78594.200.5150.5001.142125.500.3300.5000.78190.300.5010.5001.150129.800.3220.5000.78793.100.5070.5001.077114.100.3320.