期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
LA-ICP-MS法分析粉煤灰中的主要和微量元素分布
1
作者 王炜 《环境保护与循环经济》 2014年第6期56-59,共4页
利用激光剥蚀电感耦合等离子体质谱(LA-ICP-MS)来分析单个的粉煤灰,以达到确定灰分颗粒的性质以及微量元素的附着情况。根据粉煤灰分类方式,外标校准和内标标准化两种分析方法会被应用到两个灰分样品的分析当中。
关键词 飞灰颗粒 校准 内标标准化 重金属和元素分布
下载PDF
Sex Pheromone Components of the Female Black Cutworm Moth in China: Identification and Field Trials 被引量:5
2
作者 向玉勇 杨茂发 李子忠 《Zoological Research》 CAS CSCD 北大核心 2009年第1期59-64,共6页
The sex pheromone blend of a China strain of the black cutworm moth Agrotis ypsilon (Rottemberg) (Lepidoptera: Noctuidae) was investigated. Chemical analysis of pheromone gland extracts of 3-day-old females showe... The sex pheromone blend of a China strain of the black cutworm moth Agrotis ypsilon (Rottemberg) (Lepidoptera: Noctuidae) was investigated. Chemical analysis of pheromone gland extracts of 3-day-old females showed that individual isolated glands contained only very small amounts of pheromone. The high-resolution gas chromatography combined with mass spectrometry (GC-MS) analysis showed the presence of Cis-7-dodecenyl acetate (Z7-12:Ac, A), Cis-9-tetradecenyl acetate (Z9-14:Ac, B), Cis- 11-hexadecenyl acetate (Z 11 - 16 :Ac, C), Cis-8-dodecenyl acetate (Z8-12:Ac, E) and Cis-5-decenyl acetate (Z5-10:Ac, D) in biologically active pheromone gland extracts. An extract of one gland from a day 3 female gave the following values for the gland components: 0.245±0.098ng for Z7-12:Ac, 0.080±0.031ng for Z9-14:Ac, 0.089±0.033ng for Z11-16:Ac, 0.085±0.031ng for Z5-10:Ac, 0.105±0.065ng for Z8-12:Ac per female. The percentages of Z7-12:Ac, Z9-14:Ac, Z11-16:Ac, Z5-10:Ac and ZS-12:Ac in pheromone gland extracts from individual females were (meaniSE) 40.451±13.66, 13.176±5.279, 14.943±5.142, 14.392±6.10 and 17.225±9.792 respectively, and the percentages of Z7-12:Ac, Z9-14:Ac and Z11-16:Ac were 58.75±9.429, 18.91±7.539 and 22.34±7.209. Field trials indicated that each single component of sex pheromone was non-effective and captured no males. The lures baited with duality compound of AB (3 : 1) had a certain attraction to males, the mean captured number was 2.6. The attraction ability of the lures baited with ternary compound of ABC (3 : 1 :1) to males added significantly, the mean captured number per trap was 7.40, which was 2.8 times of duality compound of AB (3 : 1). The contents of sex pheromone could obviously affect its capture ability to males, the mean captured number was the highest at the dosage of 200 μg. 展开更多
关键词 Agrotis ypsilon Chemical analysis Field trial Gas chromatography/High-resolution mass spectrometry Internal standard Sex pheromone Standard chemicals
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部