三唑磷—三氟氯氰菊酯乳油的气相色谱分析

采用气相色谱法同时分析三唑磷＿三氟氯氰菊酯乳油中三唑磷和三氟氯氰菊酯含量。三唑磷平均回收率为１００．５％，三氟氯氰菊酯为９９．３％，三唑磷标准偏差为０．１０，三氟氯氰菊酯为０．０２，方法准确，方便。     

氯氰菊酯和高效氯氰菊酯的气相色谱分析

采用气相色谱法,选用ＤＢ－５毛细管柱,ＦＩＤ检测器,以邻苯二甲酸二壬酶为内标,对氯氰菊酯和高效氯氰菊酯进行定量分析。氯氰菊酯和高效氯氰菊酯的线性回归系数分别为０．９９３和０．９９８,变异系数分别为０．２２１和０．３１８,回收率分别为９９．１％－１００．２％,和９９．６％－１００．３％。     

辛·氯乳油中氯氰菊酯含量的气相色谱分析

采用气相色谱法，选择２％ＯＶ－１０１色谱柱，以癸二酸二辛酯为氯氰菊酯内标物，分析了２７％辛·氯乳油中氯氰菊酯的含量。氯氰菊酯平均回收为９９．２％，标准偏差为０．０４４％，变异系数为１．１％。     

气雾杀虫剂的气相色谱分析

采用气相色谱法,选用４％ＳＥ３０＋４％ＯＶ１０１的填充柱,以邻苯二甲酸二戊酯为内标,在２３０℃柱温下,用ＦＩＤ检测器对气雾杀虫剂的胺菊酯,氯菊酯和氯氰菊酯进行定量分析。该法的线性相关系数分别为：胺菊酯ｒ＝０．９９９８,氯菊酯ｒ＝０．９９５０氯氰菊酯ｒ＝０．９９９９;该法的标准偏差分别为：胺菊酯０．０７３,氯菊酯０．０２８,氯氰菊酯０．０１１。     

气相色谱法测定甲基对硫磷和氟氯氰菊酯的复配制剂

本文采用气相色谱程序长温法，在ＳＥ－３０填充柱上，以磷酸三苯酯作内标物，用ＦＩＤ检测器对硫硫磷和氟氯氰菊酯进行定量分析。本方法变异系数分别为０．５４％、１．７９％，平均回收率分别为１００．００％、９９．９５％，线性相关系数分别为０．９９９６、０．９９８９。     

对氯杀虫酯乳油中氯氰菊酯的气相色谱分析

本文提出了用气相色普法，采用邻苯二甲酸二辛酯作内标，分析对氯杀虫酯中的氯氰菊酯，简单，快速，避免了众多杂质峰的干扰，其标准偏差为０．０１４，变异系数为３．８％。     

四种复混杀虫剂及除草剂的同柱气相色谱测定法研究

探讨了使用５％ＯＶ－１０１或ＳＥ－３０／ＣｈｒｏｍｏｓｏｒｂＧＡＷＤＭＣＳ（０．２５～０．１８ｍｍ粒径）填充的长１．０ｍ，内径２～３ｍｍ玻璃色谱柱，对复混农药敌溴、氯胺、乐氰乳油及苄甲粉剂中有效成分敌敌畏和溴氰菊酯、水胺硫磷和氯氰菊酯、乐果和氰戊菊酯、苄嘧磺隆和甲磺隆的气相色谱分析法。样品测定结果的标准偏差≤０．２８％，变异系数≤１．７％。准确度试验所测得的平均回收率为９７．６％～１０１．６％。     

高效氯氰菊酯及其与辛硫磷混用防治棉花红铃虫,棉铃虫的效果研究

试验表明，亩用高效氯氰菊酯１５－２０毫升，对红铃虫防效达６９．８－８０．１％，对棉铃虫药后３，５，７天的防效分别在８５．７－９０．４％，８０．２－８１．０％和７４．１－７５．４％，均明显优于溴氰菊酯。其与辛硫磷混用表现出一定的增效作用。     

4.5%高效氯氰菊酯乳油中高效氯氰菊酯含量的分析

采用正相柱，２５４ｎｍ检测器，石油醚／乙酸乙酯流动相系统，实现氯氰菊酯异构体与乳油杂质的良好分离。高效氯氰菊酯回收率９９．５％～１００．９％     

丙溴磷防治棉铃虫药效试验

１９９３、１９９４年用４０％丙溴磷乳油进行了防治棉铃虫药效试验，两年的试验结果表明，亩用该药６０、８０、１００毫升，在药后７ 天远达到了８０％以上的防效，亩施１００毫升，防效均达到９３．７％以上，明显高于２．５％三氟氯氰菊酯乳油亩施３０毫升的防效７７．０％。该药是一种防治抗性棉铃虫的优良杀虫剂，建议棉田用量为亩施８０￣１００毫升为宜。     

Insect antifeedant properties of anthranoids from the genusVismia

Vismiones and ferruginins, representatives of a new class of lypophilic anthranoids from the genusVismia were found to inhibit feeding in larvae of species ofSpodoptera, Heliothis, and inLocusta migratoria.     

Direct observation of freeze-thaw instability of latex coatings via high pressure freezing and cryogenic SEM

Despite its industrial importance, the subject of freeze-thaw (F/T) stability of latex coatings has not been studied extensively. There is also a lack of fundamental understanding about the process and the mechanisms through which a coating becomes destabilized. High pressure (2100 bar) freezing fixes the state of water-suspended particles of polymer binder and inorganic pigments without the growth of ice crystals during freezing that produce artifacts in direct imaging scanning electron microscopy (SEM) of fracture surfaces of frozen coatings. We show that by incorporating copolymerizable functional monomers, it is possible to achieve F/T stability in polymer latexes and in low-VOC paints, as judged by the microstructures revealed by the cryogenic SEM technique. Particle coalescence as well as pigment segregation in F/T unstable systems are visualized. In order to achieve F/T stability in paints, latex particles must not flocculate and should provide protection to inorganic pigment and extender particles. Because of the unique capabilities of the cryogenic SEM, we are able to separate the effects of freezing and thawing, and study the influence of the rate of freezing and thawing on F/T stability. Destabilization can be caused by either freezing or thawing. A slow freezing process is more detrimental to F/T stability than a fast freezing process; the latter actually preserves suspension stability during freezing. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, October 27–29, 2004 in Chicago, IL. Tied for first place in The John A. Gordon Best Paper Competition.     

Ethanol and (−)-α-Pinene: Attractant Kairomones for Bark and Ambrosia Beetles in the Southeastern US

In 2002–2004, we examined the flight responses of 49 species of native and exotic bark and ambrosia beetles (Coleoptera: Scolytidae and Platypodidae) to traps baited with ethanol and/or (−)-α-pinene in the southeastern US. Eight field trials were conducted in mature pine stands in Alabama, Florida, Georgia, North Carolina, and South Carolina. Funnel traps baited with ethanol lures (release rate, about 0.6 g/day at 25–28°C) were attractive to ten species of ambrosia beetles (Ambrosiodmus tachygraphus, Anisandrus sayi, Dryoxylon onoharaensum, Monarthrum mali, Xyleborinus saxesenii, Xyleborus affinis, Xyleborus ferrugineus, Xylosandrus compactus, Xylosandrus crassiusculus, and Xylosandrus germanus) and two species of bark beetles (Cryptocarenus heveae and Hypothenemus sp.). Traps baited with (−)-α-pinene lures (release rate, 2–6 g/day at 25–28°C) were attractive to five bark beetle species (Dendroctonus terebrans, Hylastes porculus, Hylastes salebrosus, Hylastes tenuis, and Ips grandicollis) and one platypodid ambrosia beetle species (Myoplatypus flavicornis). Ethanol enhanced responses of some species (Xyleborus pubescens, H. porculus, H. salebrosus, H. tenuis, and Pityophthorus cariniceps) to traps baited with (−)-α-pinene in some locations. (−)-α-Pinene interrupted the response of some ambrosia beetle species to traps baited with ethanol, but only the response of D. onoharaensum was interrupted consistently at most locations. Of 23 species of ambrosia beetles captured in our field trials, nine were exotic and accounted for 70–97% of total catches of ambrosia beetles. Our results provide support for the continued use of separate traps baited with ethanol alone and ethanol with (−)-α-pinene to detect and monitor common bark and ambrosia beetles from the southeastern region of the US.     

Methyl 2,4,6-decatrienoates Attract Stink Bugs and Tachinid Parasitoids

Halyomorpha halys (Stål) (Pentatomidae), called the brown marmorated stink bug (BMSB), is a newly invasive species in the eastern USA that is rapidly spreading from the original point of establishment in Allentown, PA. In its native range, the BMSB is reportedly attracted to methyl (E,E,Z)-2,4,6-decatrienoate, the male-produced pheromone of another pentatomid common in eastern Asia, Plautia stali Scott. In North America, Thyanta spp. are the only pentatomids known to produce methyl 2,4,6-decatrienoate [the (E,Z,Z)-isomer] as part of their pheromones. Methyl 2,4,6-decatrienoates were field-tested in Maryland to monitor the spread of the BMSB and to explore the possibility that Thyanta spp. are an alternate host for parasitic tachinid flies that use stink bug pheromones as host-finding kairomones. Here we report the first captures of adult and nymph BMSBs in traps baited with methyl (E,E,Z)-2,4,6-decatrienoate in central Maryland and present data verifying that the tachinid, Euclytia flava (Townsend), exploits methyl (E,Z,Z)-2,4,6-decatrienoate as a kairomone. We also report the unexpected finding that various isomers of methyl 2,4,6-decatrienoate attract Acrosternum hilare (Say), although this bug apparently does not produce methyl decatrienoates. Other stink bugs and tachinids native to North America were also attracted to methyl 2,4,6-decatrienoates. These data indicate there are Heteroptera in North America in addition to Thyanta spp. that probably use methyl 2,4,6-decatrienoates as pheromones. The evidence that some pentatomids exploit the pheromones of other true bugs as kairomones to find food or to congregate as a passive defense against tachinid parasitism is discussed.     

2007～2008年世界塑料工业进展

收集了2007年7月～2008年6月世界塑料工业的相关资料,介绍了2007～2008年国外塑料工业的发展情况,提供了世界塑料产量、消费量及全球各类树脂的需求量及产能情况.按通用热塑性树脂(聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂)、工程塑料(尼龙、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚)、特种工程塑料(聚苯·硫醚、液晶聚合物、聚醚醚酮)、通用热固性树脂(酚醛、聚氨酯、不饱和聚酯树脂、环氧树脂)不同品种的顺序,对树脂的产量、消费量、供需状况及合成工艺、产品应用开发、树脂品种的延伸及应用的进一步扩展等技术作了详细介绍.     

2005～2006年国外塑料工业进展

收集了2005年7月～2006年6月国外塑料工业的相关资料,介绍了2005—2006年国外塑料工业的发展情况。提供了世界塑料产量、消费量及全球各类树脂生产量以及各国塑料制品的进出口情况。作为对比,介绍了中国塑料的生产情况。按通用热塑性树脂（聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂）、工程塑料（聚酰胺、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚）、通用热固性树脂（酚醛、聚氨酯、不饱和树脂、环氧树脂）、特种工程塑料（聚苯硫醚、液晶聚合物、聚醚醚酮）的品种顺序,对树脂的产量、消费量、供需状况及合成工艺、产品开发、树脂品种的延伸及应用的扩展作了详细的介绍。