排序方式: 共有13条查询结果,搜索用时 31 毫秒
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建立了一种用高效液相色谱测定氟环唑的定量分析方法。采用C18HPLC色谱柱,以甲醇乙腈水(4∶4∶3)为流动相,205nm检测波长下进行检测。结果表明,该方法的相对标准偏差为0.23,相关系数γ为0.999 7。 相似文献
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Katarína Golianov Samuel Havadej Valria Verebov Jozef Uli
ný Beta Hole
kov Jana Stani
ov 《International journal of molecular sciences》2021,22(4)
The interactions of epoxiconazole and prothioconazole with human serum albumin and bovine serum albumin were investigated using spectroscopic methods complemented with molecular modeling. Spectroscopic techniques showed the formation of pesticide/serum albumin complexes with the static type as the dominant mechanism. The association constants ranged from 3.80 × 104–6.45 × 105 L/mol depending on the pesticide molecule (epoxiconazole, prothioconazole) and albumin type (human or bovine serum albumin). The calculated thermodynamic parameters revealed that the binding of pesticides into serum albumin macromolecules mainly depended on hydrogen bonds and van der Waals interactions. Synchronous fluorescence spectroscopy and the competitive experiments method showed that pesticides bind to subdomain IIA, near tryptophan; in the case of bovine serum albumin also on the macromolecule surface. Concerning prothioconazole, we observed the existence of an additional binding site at the junction of domains I and III of serum albumin macromolecules. These observations were corroborated well by molecular modeling predictions. The conformation changes in secondary structure were characterized by circular dichroism, three-dimensional fluorescence, and UV/VIS absorption methods. 相似文献
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9种杀菌剂防治水稻穗颈瘟田间药效比较 总被引:1,自引:0,他引:1
为筛选防治水稻穗颈瘟高效、低毒、安全杀菌剂,采用田间小区试验对嘧菌酯等9种杀菌剂进行药效比较。结果表明:50%嘧菌酯WG 180.0 g/hm2、20%稻瘟酰胺SC 300.0 g/hm2、40%稻瘟灵WP 600.0 g/hm2、75%三环唑WP 281.3 g/hm2的防效较高,病穗率防效及病指防效分别为85.86%~87.47%及89.68%~90.93%;50%醚菌酯WG 120.0 g/hm2、12.5%氟环唑SC 100.0 g/hm2、10%己唑醇SC 75.0 g/hm2、430 g/L戊唑醇SC 80.6 g/hm2处理的病穗率防效及病指防效分别为72.74%~80.85%及78.61%~84.34%;25%咪鲜胺EC 337.5 g/hm2处理的防效较差,病穗率防效及病指防效分别为66.59%和72.70%。防治水稻穗颈瘟可以选用三环唑、稻瘟灵、稻瘟酰胺、咪鲜胺等常规杀菌剂及嘧菌酯、氟环唑、戊唑醇等新型高效杀菌剂。 相似文献
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微波处理-气相色谱法快速测定葱蒜类蔬菜中氟环唑残留 总被引:2,自引:0,他引:2
建立了微波灭活、乙腈-高速组织分散机提取、GC-ECD毛细柱快速测定葱蒜类等含辛辣味的蔬菜中氟环唑残留的方法.质量浓度在0.016~3.95 mg/L范围内,质量浓度与峰面积成正比,相关系数大于0.999;氟环唑在大葱、大蒜中的回收率分别为90.7%~113%、84.3%~109%;精密度(RsD)为3.6%~4.9%;重现性(RSD)为5.1%~6.0%;氟环唑在洋葱、大蒜、生姜、大葱、韭菜、香葱、蒜薹中的检出限为0.77~2.6μg/kg. 相似文献