乙烯利 ( 2 -氯乙基膦酸 )是植物生长调节剂。其测定方法有纸层析定磷法、定乙烯法和水解测氯法。通常采用的是水解测氯法 :在碱性和加热回流条件下 ,乙烯利离解出氯 ,然后以铁铵矾为指示剂 ,加入过量硝酸银标准溶液 ,再用硫氰酸铵标准溶液回滴。本文在乙烯利水解后 ,采用自动 Ethephon (2-chloroethylphosphonic acid) is a plant growth regulator. The determination of paper chromatography method of determination of phosphorus, ethylene and hydrolysis of chlorine method. Hydrolysis is usually used to measure the chlorine method: under alkaline and heated reflux conditions, ethephon dissociate the chlorine, and then ammonium ferricyanide as an indicator, adding excess silver nitrate standard solution, then ammonium thiocyanate standard solution drop . This article after ethephon hydrolysis, using automatic