电感耦合等离子体原子发射光谱法同时测定地表水中的微量铅、铬、钴、铁、锰
彭辉
长江水利委员会水文局长江上游水文水资源勘测局,重庆 400020
Simultaneous determination of plumbum, chromium, cobalt, iron and manganese in surface water by ICP-AES method
彭辉
Hydrology and Water Resources Survey Bureau of the Upper Reaches of the Yangtze River Water Conservancy Commission, Chongqing 400020, China
摘要:建立电感耦合等离子体发射光谱法同时测定地表水中的微量铅、铬、钴、铁、锰元素。对地表水样品进行蒸发浓缩,利用电感耦合等离子体发射光谱法对浓缩后的样品进行检测,外标法定量。铅、铬、钴、铁、锰元素的质量浓度在0.01~2.00 mg/L范围内与发射光谱强度线性关系良好,相关系数(r2)均大于0.998。铅、铬、钴、铁、锰的检出限分别为0.0021,0.0032,0.0027,0.0017,0.0018 mg/L;加标回收率为88.4%~100.9%;测定结果的相对标准偏差小于5.0%(n=6)。该方法操作简单,灵敏度高,检测结果准确、可靠。
Abstract:An ICP-AES method was established for simultaneous determination of plumbum, chromium, cobalt, iron and manganese in surface water. Samples were condensed by evaporation method, then tested quantitatively by ICP-AES. 5 elements showed good linear relationships with the atomic enission intensity in the range of 0.01-2.00 mg/L, the correlation coefficients were all more than 0.998. The detection limits of plumbum, chromium, cobalt, iron and manganese were 0.0021, 0.0032, 0.0027, 0.0017 and 0.0018 mg/L, respectively. The recoveries were ranged from 88.4% to 100.9%. The relative standard deviations were less than 5%(n=6). This method has high precision and accuracy, which is simple and reliable.
关键词:电感耦合等离子体发射光谱法;地表水;铅;铬;钴;铁;锰
Keywords:ICP-AES; surface water; plumbum; chromium; cobalt; iron; manganese
本文引用格式:
彭辉.电感耦合等离子体原子发射光谱法同时测定地表水中的微量铅、铬、钴、铁、锰[J].化学分析计量,2018,27(3):89-91.
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