氧乐果原药中主要杂质的GC/MS定性分析

利用气相色谱-质谱联用仪对氧乐果原药中所含主要杂质进行了定性分析,据GC／MS结果和氧乐果生产工艺推断其两种主要杂质为O,O-二甲基亚磷酸酯和O,O-二甲基-S-(甲氧基羰基甲基)硫代磷酸酯,合成杂质标样,由保留时间及质谱图确证了推断的杂质组成和结构,推测其质谱裂解途径,为氧乐果的分析及生产提供依据。     

气-质联用技术分析苯氰菊酯原药及其杂质

采用气相色谱-质谱联用技术(GC-MS)对苯氰菊酯原药及其杂质进行分析研究。结合苯氰菊酯的合成工艺,对苯氰菊酯原药中含量在0.1%以上的11个杂质进行了定性分析,并确定了结构。     

气-质联机对嗪草酮原药及其主要杂质的分析

采用气桐色谱-质谱（GC—MS）联用对嗪草酮原药主成分及主要杂质进行分析，结合嗪草酮原药合成工艺，确定了3个主要杂质的结构和含量。同时利用杂质结构对嗪草酮的合成新方法进行验证。     

高效液相色谱-电喷雾电离质谱法分析人参皂甙

利用反相高效液相色谱-电喷雾电离质谱(HPLC-ESI/MS)方法,分离分析了人参皂甙。液相色谱采用乙腈-水流动相进行梯度洗脱,质谱法利用电喷雾电离质谱(ESI/MS)研究了3种人参皂甙的一级质谱(主要给出分子量)和二级、三级质谱(提供碎片离子信息),并通过质谱图的差异对其结构进行了鉴别,建立了高效液相色谱-质谱联用法分析人参皂甙的方法。     

高效氯氟氰菊酯原药及其主要杂质的气-质联机分析

采用气相色谱-质谱(GC–MS)联用对高效氯氟氰菊酯原药主要成分及主要杂质进行分离分析,并结合高效氯氟氰菊酯的合成工艺,确定了主要成分及主要杂质的结构。     

甲磺隆原药中杂质的定性研究

采用高效液相色谱-光电二极管阵列检测器-质谱(LC-PDA-MS)对甲磺隆原药中的杂质进行定性研究.采用制备液相色谱得到杂质的纯品,用核磁共振等光谱分析技术对其进行结构确证.甲磺隆原药中的3个主要杂质为2-氨基-4-甲氧基-6-甲基-1,3,5-三嗪、3-(4-甲氧基-6-甲基-1,3,5-三嗪-2-基)-1-(2-甲酰基苯基)磺酰脲、2-氨磺酰基苯甲酸甲酯.     

三唑酮原药中主要杂质的GC-MS定性研究

通过气相色谱-质谱联用(GC-MS)的方法对三唑酮原药中的杂质进行了定性研究。从质谱图推断出杂质的可能结构，合成出了杂质标样。由保留时间及质谱图确认了三唑酮原药中的三个主要杂质为Ⅰ：1-(4-溴苯氧基)-3，3-二甲基-1-(1H-1，2，4-三氮唑-1-烷基)-2-丁酮；Ⅱ：1-(2，4-二氯苯氧基)-3，3-二甲基-1-(1H-1，2，4-三氮唑-1-烷基)-2-丁酮；Ⅲ：1，1-二(4-氯苯氧基)-3，3-二甲基-2-丁酮。     

甲基嘧啶磷及其杂质的GC-MS分析研究

采用气相色谱-质谱联用法对甲基嘧啶磷原药进行分离鉴定。采用HP-5MS(30 m×0.25 mm,0.25μm)毛细管柱,以EI源为离子源,得到甲基嘧啶磷及其8个杂质的质谱图,根据合成路线,推断出上述杂质结构,并讨论了甲基嘧啶磷的质谱裂解规律。实验结果有利于控制甲基嘧啶磷原药的杂质,提高产品质量。     

气相色谱-质谱联用测定DEIP中的微量组分

建立了气相色谱-质谱联用(GC/MS)检测间苯二甲酸二乙酯(DEIP)中微量杂质的方法,DEIP样品经减压蒸馏分离,用GC/MS对其中的微量杂质进行分析,结合生产工艺、谱库检索和人工解谱,鉴定出11种主要杂质,用面积归一法确定了11种杂质的含量,该方法的建立对生产及工艺优化有较好的指导作用。     

硫双威原药中杂质成分分析

用高效液相色谱/质谱联用技术及紫外光谱法分离并鉴定了硫双威原药中的主要杂质,确定了硫双威原药中的主要杂质为灭多威(杂质1),吡啶盐酸(杂质2),硫双威异构体(E,Z)(杂质3),硫双威异构体(E,E)(杂质4)及硫(杂质5)。     

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.     

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.     

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。     

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.     

Inorganic/organic nanocomposite coatings: The next step in coating performance

Inorganic/organic hybrid materials have considerable promise and are beginning to become a major area of research for many coating usages, including abrasion and corrosion resistance. Our primary approach is to prepare the inorganic phase in situ within the film formation process of the organic phase. The inorganic phase is introduced via sol-gel chemistry into a thermosetting organic phase. By this method, the size, periodicity, spatial positioning, and density of the inorganic phase can be controlled. An important aspect of the inorganic/organic hybrid materials is the coupling agent. The initial task of the coupling agent is to provide uniform mixing of the oligomeric organic phase with the sol-gel precursors, which are otherwise immiscible. UV-curable inorganic/organic hybrid systems have the advantages of a rapid cure and the ability to be used on heat sensitive substrates such as molded plastics. Also, it is possible to have better control of the growth of the inorganic phase using UV curing. It is our ultimate goal to completely separate the curing of inorganic and organic phases to gain complete control over the morphology, and hence optimization of “all” the coating properties. Thus far, it has been found that concomitant UV curing of the inorganic and organic phases using titanium sol-gel precursors afforded nanocomposite coatings which completely block the substrate from UV light while maintaining a transparent to visible light. Also, it has been found that the morphology of the inorganic phase is highly dependent on the concentration and reactivity of the coupling agent. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, October 27–29, 2004, in Chicago, IL.     

Ethanol and (−)-α-Pinene: Attractant Kairomones for Some Large Wood-Boring Beetles in Southeastern USA

Ethanol and α-pinene were tested as attractants for large wood-boring pine beetles in Alabama, Florida, Georgia, North Carolina, and South Carolina in 2002–2004. Multiple-funnel traps baited with (−)-α-pinene (released at about 2 g/d at 25–28°C) were attractive to the following Cerambycidae: Acanthocinus nodosus, A. obsoletus, Arhopalus rusticus nubilus, Asemum striatum, Monochamus titillator, Prionus pocularis, Xylotrechus integer, and X. sagittatus sagittatus. Buprestis lineata (Buprestidae), Alaus myops (Elateridae), and Hylobius pales and Pachylobius picivorus (Curculionidae) were also attracted to traps baited with (−)-α-pinene. In many locations, ethanol synergized attraction of the cerambycids Acanthocinus nodosus, A. obsoletus, Arhopalus r. nubilus, Monochamus titillator, and Xylotrechus s. sagittatus (but not Asemum striatum, Prionus pocularis, or Xylotrechus integer) to traps baited with (−)-α-pinene. Similarly, attraction of Alaus myops, Hylobius pales, and Pachylobius picivorus (but not Buprestis lineata) to traps baited with (−)-α-pinene was synergized by ethanol. These results provide support for the use of traps baited with ethanol and (−)-α-pinene to detect and monitor common large wood-boring beetles from the southeastern region of the USA at ports-of-entry in other countries, as well as forested areas in the USA.