稻思达在稻田环境中残留量的测定

样品以二氟甲烷为提取剂,弗罗里硅土沸合柱净化,用配有大口径石英毛细柱和电子捕获检测器（ＥＣＤ）的气相色谱仪测定,空白样品添加０．００５￣０．０２０ｍｇ／ｋｇ稻思达的平均回收率为８８％￣９４％。最低检测２为０．００１ｍｇ／ｋｇ。     

白芍上敌百虫残留量的研究

本文运用气相色谱法，测定了白芍根中敌百虫的残留量。样品用甲醇提取，在４％ＰＥＧ－２Ｍ．Ｃｈｒｏｍｏｓｏｒｂ Ｗ（ＡＷ）－ＤＭＣＳ（６０￣８０目）柱上，检测敌百虫的残留，它的最小检出浓度为０．００５ｐｐｍ。     

紫外区双波长光谱法测定2—羟基—3萘甲酰基芳胺类色酚中2—羟基—3萘 …

取代苯作溶剂,用０．０５％碳酸钠水溶液萃取工业品ＡＳ类色酚中的２,３－酸。在ｐＨ值１０．５￣１２．０的碱性水溶液中,用紫外区双波长分光光度法测定２,３－酸。回收率９８．６％￣１０１．２％,相对标准偏差０．８６％,检出限０．０１％。运用本方法对五种工业样品进行了测定。     

Tritonx—80—OP—BaSO4浓度法对煤焦中总硫的测定研究

研究了用浊度法对煤焦中总硫的测定条件及方法，Ｂａ＾２＋和ＳＯ４＾２－在酸性环境中，Ｔｒｉｔｏｎｘ－８０－ＯＰ混合液存在的条件下，能形成较稳定的均匀分布分散体系，在波长４２０ｎｍ处，用３ｃｍ比色皿，采用可见分光光度计测定吸光度，显色时间为２０ｍｉｎ；检测范围为０．０６￣１．００ｍｇ／５０ｍｌ；ＳＯ４＾２－ｌｋｄ ｎｈ ｙｘ ９０．０￣１０３．３％，样品测定结果标准偏 ０．０１４￣０．０１５。     

液体肥料中钼的测定

提出了以硫氰酸钠光度法测定速效复合液肥中钼的含量。钼在０￣４．０μｇ／ｍｌ浓度范围内符合比耳定律,相关系数γ＝０．９９９７,摩尔吸光系数ε４７０＝１．１４×１０＾４Ｌ·ｍｏｌ＾－４Ｌ·ｃｍ＾－１,方法的绝对误差为－０．０１３￣＋０．０１％,ＳＤ＝０．００４￣０．００５％。ＲＳＤ＝２．６７￣２．９９％。     

ZA23高铝锌基合金的铸造

采用普通金属材料的精炼和变质处理工艺，在燃油坩埚炉中熔炼出了２１％￣２７％Ａｌ；２．０％￣３．０％Ｃｕ；０．０１％￣０．０３５％Ｍｇ；杂质≤０．１９％，砂型铸态机械性能；σｂ：４１０￣３６２ＭＰａ；σｓ：３６９￣３１６ＭＰａ，δｓ：１１．３％￣２．５％；ＨＢ：１０９￣９９的ＺＡ２３高铝锌基合金；用粘土砂、手工造型、Ｖ／Ｆ判据和相应的铸造工艺解决了该合金易产生底缩和二次缩孔的难题生产出价值２．９万多     

涕灭威及其代谢物在苹果在土壤中残留量分析

本文概述了涕灭威及其代谢物在苹果和土壤中残留量的分析方法。样品以内酮提取，过氧乙酸氧化，二氯甲烷萃取，气火焰光度检测器测定。涕灭威在土壤和苹果中的最低检测浓度分别为０．００４、０．００４毫克／公斤，空白样品添加０．１－２．０毫克／公斤，涕灭威及其代谢物的平均回收率和变异系数分别为８４．７－１０９．７％及１．０－７．８％。     

气相色谱法测定饲料添加剂中的抗氧化剂

建立了气相色谱法同时测定饲料添加剂中２，６－二丁基羟基甲苯（ＢＨＴ），丁基对羟基茴香醚（ＢＨＡ），特丁基对苯二酚（ＴＢＨＱ）的方法，校正曲线的线性范围为０．２￣５０．０ｍｇ／ｍＬ（ＢＨＴ），０．２￣４０．０ｍｇ／ｍＬ（ＢＨＡ）、０．７￣７０．０ｍｇ／ｍＬ（ＴＢＨＱ）。平均回收率９８．２％（ＢＨＴ）、９５．７％（ＢＨＡ）、９２．１％（ＴＢＨＱ）。该方法简便，准确。     

克莠灵防除大豆田阔叶杂草试验

１９９５年用克莠灵水剂防除大豆田阔叶杂草。阜南，含山两地试验结果表明，每公顷用１．５￣２．０公升克灵１５天株防效在９８．２￣９９．１％，鲜重防效９７．５￣９９．０％，克莠灵为大豆田理想的阔叶除草剂。     

气相色谱法测定玉米中乙草胺残留量

本文报道了玉米中乙草胺残留量的气相色谱测定法，样品用石油醚－丙酮提取，乙腈液－液分配净化，电子捕获检测器测定。乙草胺的最小检测量为８．６×１０＾－１２克，在玉米中最低检测浓度０．００１毫克／公斤。空白样品添加０．０４－１．００毫克／公斤的平均回收率和变异系数分别为９４．５％和２．６％。     

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。