关键词:
分析
原子吸收光谱法
原子吸收分光光度法
化学反应
化合物
浓缩
测定
含量测定
稀释
地下水
无机化合物
质量浓度
汞
汞化合物
方法
有机化合物
高锰酸盐
过硫酸盐
质量
试剂
还原剂
还原
抽样方法
污水
地表水
测试
水
水质分析
水常规
水质
水试样
水质测试
水域
标准号:
DIN EN 1483-2007
摘要:
This European Standard specifies two methods for the determination of mercury. For the method described in Clause 4, tin(Il) chloride is used as the reducing agent. For the method given in Clause 5, sodium borohydride serves as the reducing agent. The choice of method depends on the equipment available and the matrix (see Clause 3). Both methods are suitable for the determination of mercury in water, for example in drinking, ground, surface and waste waters, in a concentration range from 0,1 μg/I to 10 μg/I. Higher concentrations can be determined if the water sample is diluted. Lower concentrations in the range of 0,001 μg/I to 5 pg/I can be determined if special mercury analysers with an optimised instrument are used or if atomic fluorescencespectrometry is applied (see EN 13506 or ISO 17852).