火焰原子吸收测Ca含量方法验证报告

火焰原子吸收测Ca含量方法验证报告一、实验的目的验证在火焰原子吸收测定Ca含量过程中,碳酸锂基体对测定结果的影响.通过考察标准曲线法与标准加入法测试样品的精密度和准确度,得出实验结论.二﹑实验仪器及实验条件普析通用TAS-990火焰原子吸收分光光度计仪器参数如下:波长（nm）光谱带宽（nm）灯电流（mA）滤波系数积分时间（秒）燃烧器高度（mm）422.70.433.036火焰类型Air（Mpa,mL/min）C2H2(Mpa,mL/min)N2O（Mpa，mL/min）Air-C2H2,贫燃焰0.240.05，1300三﹑实验人员贾贵斌、黄小梅、尤停、贺行民四﹑实验过程1﹑标准溶液的配制.①标准曲线法:0ppm﹑0.5ppm﹑1.0ppm﹑2.0ppm②标准加入曲线法:0.013ppm、0.502ppm、1.049ppm、1.592ppm、(标准溶液含有20mg/ml碳酸锂基体,通过标准加入法测得碳酸理基体中Ca的含量为0.013ppm)2﹑试样测定.①精密度考察分别对两个不同批次(TSL20150405﹑TSL20150406)的样品进行测定,其中TSL20150405批次样品做12个平行样;TSL20150406做6个平行样,并做空白对照试验.②加标测回收率考察方法的准确性在两个批次的样品中分别加入0.2ppm﹑0.5ppm标准溶液,分别用两种方法测定其回收率.五﹑数据处理1﹑方法精密度考察批号质量标准加入曲线法标准曲线法浓度百分含量平均值RSD%浓度百分含量平均值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﹑方法准确度考察批号标准加入曲线法标准曲线法初始浓度加标量加标后浓度回收率初始浓度加标量加标后浓度回收率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批号标准加入曲线法标准曲线法初始浓度加标量加标后浓度回收率初始浓度加标量加标后浓度回收率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