高效液相色谱法测定甘蓝中依维菌素残留量

建立了一种用高效液相色谱（HPLC）测定甘蓝中依维菌素残留量的方法。采用乙酸乙酯作提取剂提取甘蓝样品中依维菌素，样品衍生化后经反相C18柱分离，以甲醇为流动相，荧光检测器对依维菌素衍生物进行检测，并以外标法定量。结果表明方法的检出限为0．25μg／kg，最大变异系数为6．0％。当空白样品中添加依维菌素质量分数为0．005～1．0mg／kg时，方法回收率为87．25％-97．02％。     

嘧啶肟草醚5%乳油的高效液相色谱测定

叙述了采用高效液相色谱外标法，以甲醇-水作为流动相，用C18柱和紫外检测器（232nm），测定了嘧啶肟草醚5％乳油的含量。结果表明：方法的标准偏差为0．046；变异系数为0．87％；平均回收率为99．37％；线性相关系数为0．9994。     

10%氰氟草酯乳油的反相高效液相色谱测定

叙述了采用反相高效液相色谱外标法，以甲醇-水作为流动相，用C18柱和紫外检测器（238nm），测定10％氰氟草酯乳油的含量。结果表明：方法的标准偏差为0．065，变异系数为O．13％，平均回收率为99．43％，线性相关系数为0．9996。     

噻虫啉的反相高效液相色谱分析

建立了一种用高效液相色谱测定噻虫啉的定量分析方法，采用C18 HPLC色谱柱，以甲醇-水（体积比为70：30）为流动相．选择238nm为检测波长进行检测。结果表明，该方法的标准偏差为0．00103，变异系数为0．1042％。相关系数为0．99947，平均回收率为99．86％。     

苯磺隆的高效液相色谱分析

采用反相高效液相色谱法，试样用甲醇 氨水溶液溶解，以pH2．0的磷酸水溶液和乙腈为流动相，使用以Nova-PakC18为填料的不锈钢柱和紫外检测器(254nm)，对试样中的苯磺隆进行反相高效液相色谱分离，外标法定量。对于原药，方法的标准偏差为0．29、变异系数0．31％、平均回收率100．0％；对于10％可湿性粉荆，方法的标准偏差为0．05、变异系数0．60％、平均回收率99．6％。线性相关系数为0．9999。     

啶虫脒乳油的高效液相色谱分析

采用Spheri-5 RP-18不锈钢柱，以甲醇＋水（64＋36）为流动相和紫外检测器（254nm)，对啶虫脒进行反相色谱分离和测定。其变异系数为0．03％，标准偏差为0．097％，平均回收率为99．99％。     

赤霉素和6-苄氨基嘌呤混合物的色谱分析方法

采用C18不锈钢柱，以甲醇-水-磷酸为流动相，对赤霉素和6-苄氨基嘌呤的混合物能同时进行定量分析。该分析方法的标准偏差分别为0．0229、0．0235；变异系数分别为2．1604％、2．1963％；平均回收率分别为99．57％、99．28％。     

15%磺草酮水剂的反相高效液相色谱测定

叙述了采用反相高效液相色谱外标法,以甲醇-水作为流动相,用C18柱和紫外检测器（254nm）,测定了15％磺草酮水剂的含量。结果表明：方法的标准偏差为0．072,变异系数为0．47％,平均回收率为99．76％,线性相关系数为0．9996。     

创制农药氯代水杨胺液相色谱分析方法的研究

采用Agilent5nmC18液相色谱分析方法对创制农药氯代水杨胺进行定量分析，结果表明：氯代水杨胺相关系数为R2=1．0；平均回收率99．O％；标准偏差为；变异系数为0．18，结果表明此方法具有分离效果好，操作简单、快速、灵敏度高，重现性好等特点。     

40%克螨特乳油的反相高效液相色谱测定

采用反相高效液相色谱外标法，以甲醇-水作为流动相，用C18柱和紫外检测器（280nm），测定了40％克螨特乳油的含量。结果表明，方法的标准偏差为0．060，变异系数为0．15％，平均回收率为99．65％，线性相关系数为0.9994。     

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.