The hydrolysis of Di‐isopropyl methylphosphonate in ground water

摘要: Abstract The half‐life of di‐isopropyl methylphosphonate (DIMP) in ground water at 10°C was estimated to be 500 years with a 95% confidence interval 447 559 from measurements the hydrolysis rates four temperatures ranging between 70 and 98°C. First‐order kinetics were assumed, Arrhenius equation used extrapolate normal temperature water, 10°C. calculated this for ASTM Type II 684 470 995 years, agreement previously published study. major products detected isopropyl methylphosphonic acid acid. After heating samples 43 days 90°C, molar accounting remaining DIMP its 15% starting material. Inorganic phosphate not detected. very slow rate suggests that unidentified are likel...