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供试土样为中国的棕壤、红壤和赤红壤及巴基斯坦的ｇｕｊｒａｎｗａｌａｓｅｒｉｅｓ和ｋｏｔｌｉｓｅｒｉｅｓ．与Ｈ－粘粒比，Ｈ－粘粒复合体有较多的净负电荷和较少的正电荷。在红壤和赤红壤中，Ｈ－粘粒复合体的表面积比Ｈ－粘粒大，但在棕壤，ｇｕｊｒａｎｗａｌａｓｅｒｉｅｓ和ｋｏｔｌｉｓｅｒｉｅｓ中则相反。在ｐＨ近７．０时，因有机质而使负电荷百分数增加的次序为赤红壤＞红壤＞ｇｕｊｒａｎｗａｌａｓｅｒｉｅｓ＞ｋｏｔｌｉｓｅｒｉｅｓ＞棕壤。当ｐＨ＜７时有机质可以提高赤红壤、红壤和ｋｏｔｌｉｓｅｒｉｅｓ对锌的吸附，在各种锌浓度下，有机质均能提高棕壤和ｇｕｊｒａｎｗａｌａｓｅｒｉｅｓ对锌的吸附。与Ｌａｎｇｍｕｉｒ和Ｔｅｍｋｉｎ方程比较，Ｆｒｅｕｎｄｌｉｃｈ方程最适合描述Ｈ－粘粒复合体对锌的吸附行为，但Ｌａｎｇｍｕｉｒ方程最适合于自然粘粒复合体。
Specimens for testing were brown soil in China, red soil and red soil, and gujranwalaseries and kotliseries in Pakistan. H-cosmid complexes have more net negative charge and less positive charge than H-cosmid. In red and latosolic red soils, the surface area of H-cosmid complexes was larger than that of H-cosmids, but reversed in brown soil, gujranwalaseries and kotliseries. At pH near 7.0, the order of increase of the percentage of negative charge due to organic matter is red soil> red soil> gujranwalaseries> kotliseries> brown soil. At pH <7, organic matter could enhance the adsorption of zinc on red soil, red soil and kotliseries. Under various zinc concentrations, organic matter could increase the adsorption of zinc on brown soil and gujranwalaseries. Compared with the Langmuir and Temkin equations, the Freundlich equation is the most suitable for describing the adsorption behavior of zinc on the H-cosmid complexes, but the Langmuir equation is the most suitable for the natural cosmid complexes.