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本文介绍了用一氯化溴快速消解水和尿中有机汞的方法,仅需2种试剂和5～180min的消解时间,不用加热处理。与常规硫酸-高锰酸钾消解法比,本法简便、快速、易行,适于天然水、废水、废渣浸提液及尿中总汞的测定。分析步骤:吸取0～10.00ml氯化汞标液(0.100μgHg~(2+)/ml)于汞蒸气反应瓶中,加1.5％盐酸至25ml,配制标准系列。另取25.00ml样品和去离子水(空白试验)于反应瓶中。加入适量(<3ml)0.025mo1/L溴酸钾-0.050mol/L溴化钾溶液(含30％盐酸),使试液呈溴之微黄色,密盖混匀。室温(>6℃)放置5～180min。加入12％盐酸羟胺溶液0.2ml,混匀。尿样则再加入2滴磷酸三丁脂。向试液中加入20％氯化亚锡溶液(含
This article describes the rapid elimination of dissolved organic bromine and water with bromine monochloride method, only two reagents and 5 ~ 180min digestion time, without heat treatment. Compared with the conventional sulfuric acid - potassium permanganate digestion method, the method is simple, rapid and easy to use, suitable for the determination of natural water, waste water, waste residue and urine total mercury. Analysis steps: Pipette 0 ~ 10.00ml Mercury chloride standard solution (0.100μgHg ~ (2 +) / ml) in the mercury vapor reaction flask, add 1.5% hydrochloric acid to 25ml, the standard series. Another 25.00ml sample and deionized water (blank test) in the reaction flask. Add appropriate amount (<3ml) of 0.025mo1 / L potassium bromate - 0.050mol / L potassium bromide solution (containing 30% hydrochloric acid), the test solution was bromine yellow, close cover and mix. Place at room temperature (> 6 ℃) for 5 ~ 180min. Join 12% hydroxylamine hydrochloride solution 0.2ml, mix well. Urine is then added two drops of tributyl phosphate. To the test solution was added 20% stannous chloride solution (including