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首页> 外文期刊>Environmental Monitoring and Assessment >A nanosilver-based spectrophotometric method for determination of malachite green in surface water samples
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A nanosilver-based spectrophotometric method for determination of malachite green in surface water samples

机译：基于纳米银的分光光度法测定地表水中的孔雀石绿

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摘要

A new spectrophotometric method is reported for the determination of nanomolar level of malachite green in surface water samples. The method is based on the catalytic effect of silver nanoparticles on the oxidation of malachite green by hexacyanoferrate (Ⅲ) in acetate-acetic acid medium. The absorbance is measured at 610 run with the fixed-time method. Under the optimum conditions, the linear range was 8.0×10-9-2.0× l0-7mol L-1 malachite green with a correlation coefficient of 0.996. The limit of detection (S/N=3) was 2.0×10-9 molL-1. Relative standard deviation for ten replicate determinations of l.0×10-8molL-1 malachite green was 1.86 %. The method is featured with good accuracy and reproducibility for malachite green determination in surface water samples without any pre-concentration and separation step.
机译：报道了一种新的分光光度法测定地表水样品中纳摩尔浓度的孔雀石绿。该方法基于银纳米颗粒对乙酸-乙酸介质中六氰合铁酸盐（Ⅲ）氧化孔雀石绿的催化作用。用固定时间方法在610nm下测量吸光度。在最佳条件下，线性范围为8.0×10-9-2.0×10-7mol L-1孔雀石绿，相关系数为0.996。检测极限（S / N ＝ 3）为2.0×10-9molL-1。十次重复测定的1.0×10-8molL-1孔雀石绿的相对标准偏差为1.86％。该方法具有无需进行预浓缩和分离步骤即可测定地表水中孔雀石绿的高精度和重现性的特点。

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