Nanocrystalline Zn(Oxin)2·2H2O (Zinc 8-quinolinolate) was synthesized at near ambient temperature by solid state chemical reaction. Phases, particle sizes and morphology of the prepared nanocrystallite were chara...Nanocrystalline Zn(Oxin)2·2H2O (Zinc 8-quinolinolate) was synthesized at near ambient temperature by solid state chemical reaction. Phases, particle sizes and morphology of the prepared nanocrystallite were characterized by Powder X-ray diffraction (XRD) and transmission electron microscopy(TEM). The results showed that the crystallite product had an average size about 30 nm. The effects of a series of reaction conditions on the synthesis of Zn(Oxin)2·2H2O (Zinc 8-quinolinolate) by solid state reaction were studied.展开更多
The dissociation kinetics of Ni complex (NiL 2) of Oxine (HL) by H + was investigated in neutral(Brij 35), cationic(CTAN), and anionic(SDS) micelles.The kinetic results have been interpreted by using the distribution...The dissociation kinetics of Ni complex (NiL 2) of Oxine (HL) by H + was investigated in neutral(Brij 35), cationic(CTAN), and anionic(SDS) micelles.The kinetic results have been interpreted by using the distribution model. The relevant distribution constants were determined independently by spectrophotometry.展开更多
Leaf spot disease seriously affects the yield and quality of waxberry, but there is no registration agent for prevention and control of the disease. The field trials showed that the control efficacy of 33.5% oxine-cop...Leaf spot disease seriously affects the yield and quality of waxberry, but there is no registration agent for prevention and control of the disease. The field trials showed that the control efficacy of 33.5% oxine-copper SC against leaf spot disease on waxberry reached above 74% when used at the dosage of 167.5-223.3 mg/kg. 33.5% Oxine-copper SC could be used to control leaf spot disease on waxberry.展开更多
文摘Nanocrystalline Zn(Oxin)2·2H2O (Zinc 8-quinolinolate) was synthesized at near ambient temperature by solid state chemical reaction. Phases, particle sizes and morphology of the prepared nanocrystallite were characterized by Powder X-ray diffraction (XRD) and transmission electron microscopy(TEM). The results showed that the crystallite product had an average size about 30 nm. The effects of a series of reaction conditions on the synthesis of Zn(Oxin)2·2H2O (Zinc 8-quinolinolate) by solid state reaction were studied.
文摘The dissociation kinetics of Ni complex (NiL 2) of Oxine (HL) by H + was investigated in neutral(Brij 35), cationic(CTAN), and anionic(SDS) micelles.The kinetic results have been interpreted by using the distribution model. The relevant distribution constants were determined independently by spectrophotometry.
文摘Leaf spot disease seriously affects the yield and quality of waxberry, but there is no registration agent for prevention and control of the disease. The field trials showed that the control efficacy of 33.5% oxine-copper SC against leaf spot disease on waxberry reached above 74% when used at the dosage of 167.5-223.3 mg/kg. 33.5% Oxine-copper SC could be used to control leaf spot disease on waxberry.
文摘[目的]研究杀菌剂喹啉铜在马铃薯上的残留规律。[方法]建立了马铃薯中喹啉铜残留量测定的高效液相色谱-串联质谱法;在河北、湖南2地开展喹啉铜在马铃薯上的田间残留试验。[结果]方法最低检出质量分数为0.10 mg/kg,在0.10~5.0 mg/kg残留水平内,添加回收率为75.8%~102.8%,变异系数为2.1%~6.7%。2地残留消解和最终残留量试验结果显示,喹啉铜在马铃薯植株上的半衰期分别为8.89、11.1 d;按推荐剂量108 g a.i./hm^2和加倍剂量162 g a.i./hm^2施药3~4次,距最后1次施药后7、14、21 d,喹啉铜在马铃薯中的残留量均小于0.10 mg/kg。[结论]喹啉铜按推荐剂量108 g a.i./hm^2施药3次,施药后7 d,马铃薯中喹啉铜残留量小于0.10 mg/kg,食用安全。
