2007•Chinese Rare EarthsRequires access
Effect of Spraying Lanthanum Nitrate on Chlorpyrifos Residue in Spinach
YU Ye-zhi
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Abstract
Effect of spraying lanthanum nitrate onchlorpyrifos residue in spinach was investigated in the field.It was concluded that the degradation rate of chlorpyrifos by spraying lanthanum nitratewas significantly faster,and the half-life was 2 days shorter than the controlled.Among of the different concentration oflanthanum nitrate,the halflife was similar.The safe-timesof chlorpyrifoswere different,based on the recommended dose and the double dose.The safe-timeof chlorpyrifos after spraying lanthanum nitratewas 4.1~7.5 days shorter than the controlledon the recommended dose,while that was shorter only 3.9~5.5 days than thecontrolled on the double dose.