我们还对传统的甲醛—硫酸法进行了改良，并将新的甲醛—硫酸法运用于硝酸尿素金属络合物中的酰氨态氮和总氮含量的测定中。
We also improved the conventional formol-H2SO4 titrimetric method, and applied it into the determinations of the contents of amide nitrogen and total nitrogen in urea nitrate metal complexes.
结果表明海藻酸锌络合物对尿素的吸附主要是通过锌与尿素之间的配位作用进行的。
Results showed that Alginate Zn complex adsorbed urea by means of coordination effect between zinc and urea.
用尿素饱和水溶液，有机氯化物为活化剂，生成的尿素-正烷烃络合物成球状，易于过滤分离。
With water as urea solvent and an organic chlorine compound as activator, the adducts formed into small spheres which are easily filterable.
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