Chen S, Sun M
Center for Physical Sciences, University of Science and Technology of China, 230026 Hefei.
Guang Pu Xue Yu Guang Pu Fen Xi. 2001 Jun;21(3):377-81.
Trace amounts of copper, lead, cadmium and manganese were determined using a flow injection on-line double chelating resin column pre-concentration FAAS system. The average measurement sensitivities for Cu2+, Pb2+, Cd2+ and Mn2+ increased by factors of 33, 50, 37 and 29 respectively. Sampling frequency was 60 h-1. Relative standard deviations were 2.21%, 3.24%, 1.93% and 3.66% (n = 11) for Cu2+, Pb2+, Cd2+ and Mn2+ respectively. For the national standards (human hair samples, wheat sample and pork liver), the measurement results agreed with the certified values. The method was successfully applied to determinate trace amounts of Cu2+, Pb2+, Cd2+ and Mn2+ species in drinking water and environment water samples.
采用流动注射在线双螯合树脂柱预富集火焰原子吸收光谱系统测定痕量铜、铅、镉和锰。Cu2+、Pb2+、Cd2+和Mn2+的平均测量灵敏度分别提高了33倍、50倍、37倍和29倍。采样频率为60次/小时。Cu2+、Pb2+、Cd2+和Mn2+的相对标准偏差分别为2.21%、3.24%、1.93%和3.66%（n = 11）。对于国家标准物质（人发样品、小麦样品和猪肝），测量结果与认定值相符。该方法成功应用于饮用水和环境水样中痕量Cu2+、Pb2+、Cd2+和Mn2+的测定。
