Identification of intermediates leading to chloroform and C-4 diacids in the chlorination of humic acid.
Identification of intermediates leading to chloroform and C-4 diacids in the chlorination of humic acid.
复制标题
腐植酸氯化过程中生成氯仿和 C-4 二酸的中间体的鉴定。
DOI：
--
复制
发表时间：
1985
影响因子：
11.4
通讯作者：
L. Galan
中科院分区：
文献类型：
--
作者：
E. Leer;J. Damsté;C. Erkelens;L. Galan
对陆生腐殖酸的氯化进行了研究
在pH 7. 2不同的氯碳比。的
主要产品为氯仿、二乙酸和三氯乙酸
酸和氯化C-4二酸。在高氯剂量下
检测到许多新的氯化产物，
它们是氯化芳香酸。在低氯剂量下
发现了一类氯化化合物，
三氯甲基。这些化合物可以
转化为氯仿，在大多数情况下，
通过氧化和水解反应。因为这些
化合物主要在低氯剂量下发现，
可以被认为是反应中的中间体，
氯仿中间体支持以下假设：
认为腐殖酸中的间二羟基苯部分是
负责氯仿的形成。的反应
提出了一种解释中间体形成的方案。
The chlorination of terrestrial humic acid was studied
at pH 7. 2 with varying chlorine to carbon ratios. The
principal products are chloroform, di- and trichloroacetic
acid, and chlorinated C-4 diacids. At a high chlorine dose
many new chlorination products were detected, among
them chlorinated aromatic acids. At a low chlorine dose
a class of chlorinated compounds was found, which contained
a trichloromethyl group. These compounds may
be converted into chloroform and in most eases C-4 diacids
by oxidation and hydrolysis reactions. Because these
compounds are found mainly at low chlorine dosage, they
may be regarded as intermediates in the reactions that give
chloroform. The intermediates support the hypothesis of
Rook that m-dihydroxybenzene moieties in humic acid are
responsible for the formation of chloroform. A reaction
scheme is proposed that explains the formation of the intermediates.