Degradation Behavior of Methyl Isothiocyanate in the Aquatic Environment

Autor: M. Yunoki, T. Tateyama, Koichi Hiromatsu, Takeshi Yoshida, Takakazu Kayashima, K. Katagiri, K. Nakazono, Y. Simogawa, Satoshi Ogawa, Tsutomu Nishihara
Rok vydání: 2009
Předmět:
Zdroj: Journal of Japan Society on Water Environment. 32:213-218
ISSN: 1881-3690
0916-8958
DOI: 10.2965/jswe.32.213
Popis: Methyl isothiocyanate (MITC) is a fumigant used to control nematodes, fungi, and insects in agricultural soils. Most of MITC used for agriculture is released into the environment. To examine the degradation behavior of MITC in an aquatic environment, a biodegradation test using an activated sludge was carried out. This test revealed that MITC is hardly mineralized, but converted to six metabolites, which were determined to be 1,3-dimethylthiourea, 3-methylamino-5-oxa- thia-2,7-diaza-2,6-octadiene, 3-methylamino-4,5-dithia-2,7-diaza-2,6-octadiene, methylamine, elemental sulfur, and carbon disulfide. The first three compounds have never been detected or predicted as products even in soil.
Databáze: OpenAIRE