火焰原子吸收測(cè)Ca含量方法驗(yàn)證報(bào)告

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(guò)程中,碳酸鋰基體對(duì)測(cè)定結(jié)果的影響.通過(guò)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（nm）燈電流（mA）濾波系數(shù)積分時(shí)間（秒）燃燒器高度（mm）422.70.433.036火焰類(lèi)型Air（Mpa,mL/min）C2H2(Mpa,mL/min)N2O（Mpa，mL/min）Air-C2H2,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(guò)程1﹑標(biāo)準(zhǔn)溶液的配制.①標(biāo)準(zhǔn)曲線法:0ppm﹑0.5ppm﹑1.0ppm﹑2.0ppm②標(biāo)準(zhǔn)加入曲線法:0.013ppm、0.502ppm、1.049ppm、1.592ppm、(標(biāo)準(zhǔn)溶液含有20mg/ml碳酸鋰基體,通過(guò)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.①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).②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)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0.2320.124TSL201504054.99950.9700.00370.00363.650.6270.00250.00242.904.99990.9330.00350.6130.00244.99960.9250.00350.6030.00245.00070.9170.00340.5930.00235.00010.9100.00340.5950.00245.00030.9190.00340.5940.00235.00090.9630.00370.6120.00245.00000.9610.00360.6170.00254.99940.9980.00380.6260.00254.99980.9420.00360.5880.00234.99980.9410.00350.5880.00235.00000.9580.00360.6070.0024TSL201504065.00080.9770.00370.00392.800.6190.00250.00263.524.99921.0240.00400.6570.00275.00100.9820.00370.6280.00254.99981.0290.00400.6590.00275.00031.0020.00380.6430.00265.00061.0130.00390.6640.00272﹑方法準(zhǔn)確度考察批號(hào)標(biāo)準(zhǔn)加入曲線法標(biāo)準(zhǔn)曲線法初始濃度加標(biāo)量加標(biāo)后濃度回收率初始濃度加標(biāo)量加標(biāo)后濃度回收率TSL201504050.9700.2001.16296.000.6270.2000.75162.000.9330.2001.280173.500.6130.2000.80294.500.9250.2001.197136.000.6030.2000.78289.500.9170.2001.170126.500.5930.2000.77792.000.9100.2001.159124.500.5950.2000.74876.500.9190.2001.220150.500.5940.2000.77892.000.9630.2001.257147.000.6120.2000.80797.500.9610.2001.224131.500.6170.2000.78684.500.9980.2001.212107.000.6260.2000.77976.500.9420.2001.163110.500.5880.2000.76890.000.9410.2001.189124.000.5880.2000.77392.500.9580.2001.229135.500.6070.2000.78790.00TSL201504060.9770.2001.246134.500.6190.2000.80995.001.0240.2001.269122.500.6570.2000.83589.000.9820.2001.269143.500.6280.2000.80287.001.0290.2001.286128.500.6590.2000.84894.501.0020.2001.235116.500.6430.2000.82088.501.0130.2001.311149.000.6640.2000.84791.50批號(hào)標(biāo)準(zhǔn)加入曲線法標(biāo)準(zhǔn)曲線法初始濃度加標(biāo)量加標(biāo)后濃度回收率初始濃度加標(biāo)量加標(biāo)后濃度回收率TSL201504050.4850.5001.097122.400.3140.5000.74385.900.4670.5001.093125.300.3070.5000.73986.500.4630.5001.119131.300.3020.5000.75590.700.4590.5001.083124.900.2970.5000.73788.100.4550.5001.136136.200.2980.5000.76192.700.4600.5001.089125.900.2970.5000.74088.600.4820.5001.114126.500.3060.5000.76591.800.4810.5001.034110.700.3090.5000.69376.900.4990.5001.087117.600.3130.5000.72582.400.4710.5001.022110.200.2940.5000.70281.600.4710.5001.023110.500.2940.5000.69379.800.4790.5001.130130.200.3040.5000.77093.30TSL201504060.4890.5001.118125.900.3100.5000.76691.300.5120.5001.145126.600.3290.5000.81497.100.4910.5001.118125.400.3140.5000.78594.200.5150.5001.142125.500.3300.5000.78190.300.5010.5001.150129.800.3220.5000.78793.100.5070.5001.0771