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環境土壤重金屬(鎘鉛銅鋅鎳鉻汞砷)檢測

2020-05-18 21:02:02??????點擊:
環境土壤重金屬(鎘鉛銅鋅鎳鉻汞砷)檢測


——PFA溶樣罐15ml配套防腐電熱板消解土壤步驟:


1、氫氟酸+高氯酸+硝酸小于5ml,按1:1:1
土壤樣品小于0.2g
2、將樣品裝入PFA溶樣罐15ml中,放在防腐電熱板上,密閉小于110℃消解:8-10個小時
然后根據礦樣土壤樣品消解難易情況,再敞口消解(最高180℃)

3、以上密閉+敞口消解時間共10-20個小時,有時夜里電熱板也不關閉(前提是電熱板有定時關閉功能)



為什么選擇PFA溶樣罐15ml ?


1、體積小,可大批量實驗,

2、罐體長度不高,清洗更方便、省時
3、效率更高,成本更低

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