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【求助】威百亩的测定

  • lijin79833313
    2011/04/23
  • 私聊

农残检测

  • 版友们,有测过威百亩残留的吗?以前的方法都是将其转化为异硫氰酸甲酯后,采用GC-FID检测,现在有直接能测定威百亩的方法吗?大家有什么建议也可以说下,谢谢了啊 !!!!!!!!(不是咆哮体)
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  • 雾非雾

    第1楼2011/04/23

    应助达人

    Determination of sodium N-methyldithiocarbamate (metham sodium) and methyl isothiocyanate in aqueous samples by high-performance liquid chromatography using a micellar mobile phase

    A high-performance liquid chromatographic procedure was developed for the simultaneous determination of the fungicides sodium N-methyldithiocarbamate and methyl isothiocyanate. These fungicides were separated on a reversed-phase octadecyl bonded column with micellar hexadecyltrimethylammonium bromide in an eluent of methanol-water (50 + 50 V/V) buffered to pH 6.8 (10 mM phosphate). Detection was carried out at 247 nm with a UV detector. Recoveries of standards added to pond water and untreated sewage were >92% and >88%, respectively, for both fungicides. The detection limits for sodium N-methyldithiocarbamate and methyl isothiocyanate are 70 µg dm–3(p.p.b.) and 1 µg dm–3(p.p.b.), respectively.

    http://pubs.rsc.org/en/Content/ArticleLanding/1987/AN/an9871200701
    网上查的,原文需要购买。HPLC检测。


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  • lijin79833313

    第2楼2011/04/24

    好的,谢谢了。

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