光催化降解甲胺磷的研究

用离子色谱法检测光催化降解甲胺磷的最终产物PO4^3-、SO4^2-、NH4^ 、NO3^-，它们随光照时间的生成量不同，80min时甲胺磷分子中的N原子已完全矿化为NH4^ 和NO3^-，而P、S原子矿化为PO4^3-、SO4^2-则较慢且不同步，刚开始，SO4^2-生成量大于PO4^3-，100min后则PO4^3-生成量大于SO4^2-，经气相色谱及CODCr分析，均表明在甲胺磷光催化降解过程中存在中间产物，用气质联用仪（GC-MS）检测出中间产物CH3-SO2-SCH3及CH3S-SCH3，提出光催化降解甲胺磷的可能途径。

Study on Photocatalytic Degradation of Methamidophos

The products PO43-,SO42-,NH4+,NO3- photocatalytic degradation of methamidophos were detected by chro-matography. After methamidophos was degraded 80 minutes, N atom of methamidophos was totally mineralized into NH4- and NO3-, P and S atom were mineralized into PO43- and SO42- respectively more slowly, at first the amount of SO42- was greater than that of PO43-, but the amount of PO43- was greater than that of SO42- after 80 minutes. GC and CODCr analysis showed that some intermediates formed during photo-catalytic degradation of methamidophos. CH3-S-SCH3 And CH3S-SCH3 were inspected by GC-MS, and the possible pathway of photocatalytic degradation of methamidophos was proposed.