【摘要】 比较了三种提取剂：１ｍｏｌ／ＬＮＨ＿４ＯＡｃ、０．００５ｍｏｌ／ＬＤＴＰＡ－ＴＥＡ，０．１ｍｏｌ／Ｌ，ＨＣ１，对南北方的水稻土和灰钙土中的有效态Ｃｄ、Ｃｕ、Ｚｎ、Ｐｂ的提取率、各种相关性以及临界提取量和误差等。结果表明：北方灰钙土中有效态Ｃｄ的适宜提取剂为ＮＨ＿４ＯＡｃ，其次为ＤＴＰＡ、ＨＣ１；有效态Ｃｕ、Ｚｎ的适宜提取剂皆为ＤＴＰＡ，而南方水稻土中有效Ｃｄ、Ｃｕ的适宜提取剂也均为ＤＴＰＡ。更多还原

【Abstract】 AbstractThe extraction efficiency,correlation and critical extraction capacityof three extractants:1mol/L NH₄OAc,0 .05mol/L DTPA-TEA,and 0.1mol/L HC1,for the available Cd,Cu,Zn and Pb in sierozem and aquorizemwere studied,The best extractant for available Cd in sierozem wasNH₄OAc,DTPA was idoal for available Cu and Zn in the same soil,Foravailable Cd and Cu in aquorizem,DTPA was the first choice更多还原