CAJ | 학술논문

选用KH2PO4、Na2CO3、NaHCO3、KCl4种盐溶液作为提取剂,以电磁搅拌器、超声波振荡器两种提取方法,开展了土壤中六价铬提取方法试验研究.试验结果表明,4种提取剂提取效果由高到低依次为,KCl＞NaHCO3＞Na2CO3＞KH2PO4.用电磁搅拌器搅拌比用超声波振荡器振荡提取效果好.因此,使用0.4mol/L的KCl提取液,电磁搅拌器搅拌提取土壤中六价铬的效果最好,土壤中六价铬含量大于10mg/kg时,提取率可达80%以上.
선용KH2PO4、Na2CO3、NaHCO3、KCl4충염용액작위제취제,이전자교반기、초성파진탕기량충제취방법,개전료토양중륙개락제취방법시험연구.시험결과표명,4충제취제제취효과유고도저의차위,KCl＞NaHCO3＞Na2CO3＞KH2PO4.용전자교반기교반비용초성파진탕기진탕제취효과호.인차,사용0.4mol/L적KCl제취액,전자교반기교반제취토양중륙개락적효과최호,토양중륙개락함량대우10mg/kg시,제취솔가체80%이상.
This paper selected four kinds of extractant(KH2PO4,Na2CO3,NaHCO3 and KCl)and two methods(electromagnetic stirrer and ultrasonic oscillator)to make experimental study on extraction methods of chromium(Ⅵ)in soil.The results show that the four kinds of extraction effect from high to low as follows:KCl＞NaHCO3＞KH2PO4＞Na2CO3.And the extraction effect of electromagnetic stirrer is better than ultrasonic oscillator's.Therefore,the best extraction method is to use electromagnetic stirrer with 0.4mol/L of KCl extract.If the chromium(Ⅵ)content in soil is higher than 10mg/kg,the extraction rate of will be more than 80%.