钼水质自动监测仪及其在实际监测中的应用
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摘要
MoO(SCN)_5离子与染料罗丹明B(RhB)反应,生成蓝色三元络合物MoO(SCN)_5(RhB)_2,在600 nm有强吸收,依此原理开发钼自动监测仪。检出限达到0.042 2 mg/L,精密度为6.19%～9.44%,加标回收率为82.4%～116%,质控图中所有数据均未超出x±3s区间内,与测定钼的标准方法具有可比性。该仪器应用于某地表水应急事件中,其监测数据有效指导事故处理。
The reaction of the molybdenum oxypentathiocyanate ion with the dyestuff Rhodamine B(Rhb) produces the ternary complex, MoO(SCN)_3(Rhb)_2.The ternary complex absorbs strongly at 600 nm, forming the basis why the automatic water quality monitoring instrument for molybdenum can be made.The detection limit is 0.042 2 mg/L, the precision is 6.19%～9.44%, the recovery rate is 82.4% to 116%, and all of the data in the quality control profile did not exceed the range of x±3s.The instrument is comparable to the standard method for determining Molybdenum.In a surface water accident emergency, the data determined by the instrument effectively guided the accident handling.
The reaction of the molybdenum oxypentathiocyanate ion with the dyestuff Rhodamine B(Rhb) produces the ternary complex, MoO(SCN)_3(Rhb)_2.The ternary complex absorbs strongly at 600 nm, forming the basis why the automatic water quality monitoring instrument for molybdenum can be made.The detection limit is 0.042 2 mg/L, the precision is 6.19%～9.44%, the recovery rate is 82.4% to 116%, and all of the data in the quality control profile did not exceed the range of x±3s.The instrument is comparable to the standard method for determining Molybdenum.In a surface water accident emergency, the data determined by the instrument effectively guided the accident handling.
引文
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[2] 范羽,周涛发,张达玉,等.中国钼矿床的时空分布及成矿背景分析[J].地质学报,2014,88(4):784 — 804.
[3] 于常武,许士国,陈国伟,等.水体中钼污染物的迁移转化研究进展[J].环境污染与防治,2008,30(9):70 — 74.
[4] 郭志军, 王艳秋.乌金塘水库水体中钼污染现状及其防治对策 [J] .环境科学导刊,2007,26(4):59 — 60.
[5] 郭志军,周慧晶,吕达强.葫芦岛市钢屯地区地下水钼污染状况调查[J].环境保护科学,2007,33(4):49 — 51.
[6] 陈远.遵义钼镍矿下游水体污染及生物毒性研究[J].科技创新与应用.2012,(23):121 — 122.
[7] 贾婷,贾洋洋,余淑娟,等.闽东某钼矿周边农田土壤钼和重金属的污染状况[J].中国环境监测,2015,31(1):45 — 49.
[8] 毛香菊,马亚梦,邹安华,等.内蒙古草原某铜钼矿区土壤重金属污染特征研究[J].环境科学与技术,2016,39(6):156 — 161.
[9] 曲蛟,王红雨,袁星,等.钼矿尾矿区蔬菜地土壤中重金属含量分析与生态风险预警评估[J].安全与环境学报,2008,8(2):76 — 79.
[10] 刘鹏,杨玉爱.土壤中的钼及其植物效应的研究进展[J].农业环境保护,2001,20(4):280 — 282.
[11] 周变华,林霖,杨自军,等.钼对小鼠脂质过氧化损伤及肝Smac和bax表达的影响[J].中国兽医科学, 2012, 42(6):617 — 621.
[12] 刘铮,未其清,徐俊祥,等.中国土壤中相的含量与分布规律[J].环境科学学报,1990,10(2):132 — 137.
[13] Underwood E J.Trace elements in human and animal nutrition [M].London:Academic Press Inc,1986.39 — 67.
[14] P.R.Haddad, P.W.Alexander, L.E.Smythe.Spectrophotometric and Fluorometric Determination of Traces of Molybdenum in Soils and Plants [J].Talanta,1974,22 (1):61 — 69.