乐果的极谱测定,迄今在文献中仅有间接法的报导,这可能是由于尚未发现其极谱波而视之为无电活性的物质。于是,不得不将其化学结构水解或破坏以转化为具有电活性物质,再进行极谱测定。最早报导的是1962年Tafuri的酸解间接极谱法,用H_2SO_4将乐果水解为HSCH_2CONHCH_3进行测定。此后有人用NaOH进行碱解,也有的用20％HCl在Ni存在下进行破坏使乐果转化为H_2S,再以铅盐溶液吸收生成PbS进行无机极谱分析 Polarographic determination of dimethoate so far has only been reported in the literature by indirect methods, probably due to the fact that the polarographic wave has not been found to be electrolessly active. As a result, the chemical structure has to be hydrolyzed or destroyed to convert it into an electroactive substance, followed by polarographic determination. The earliest reported acid hydrolysis in 1962 Tafuri indirect polarography, H_2SO_4 dimethoate hydrolyzed to HSCH_2CONHCH_3 were measured. Some people use NaOH for alkali hydrolysis, and some use 20% HCl in the presence of Ni for the destruction of dimethoate into H_2S, and then lead salt solution to generate PbS for inorganic polarographic analysis