新试剂2－（5－硝基－2－吡啶偶氮）－5－二乙氨基苯酚与铌配合物的分光光度法研究

研究了新试剂２－（５－硝基－２－吡啶偶氮）－５－二乙氨基苯酚（５－ＮＯ２－ＰＡＤＡＰ）与Ｎｂ（Ｖ）分光光度性质。在含０．０８ｍｏｌ／ＬＨ２ＳＯ４的水－乙醇介质中，Ｎｂ（Ｖ）能与５－ＮＯ２－ＰＡＤＡＰ进行灵敏的显色反应，形成１：１的深色配合物，最大吸收波长为６１０ｎｍ，摩尔吸光系数为９．５９×１０４Ｌ·ｍｏｌ－１·ｃｍ－１，铌在０～５０μｇ／２５ｍＬ范围内服从比尔定律，本法体系简单，操作简便快速；选择性好；常见元素允许量较大，８倍量的钽存在不产生干扰。用于矿样中微量铌的测定，结果令人满意。     

CPARH的合成及Ag（Ⅰ）－CPARH络合物的光度性质研究

合成了５－（２－（４－氯苯酚）偶氮）－罗丹宁。在ｐＨ６．９５的ＮＨ４Ａｃ缓冲溶液中，当有０．１８％的ＳＬＳ存在时，Ａｇ（Ⅰ）与ＣＰＡＲＨ形成１：１络合物，λｍａｘ为４８０ｎｍ，ε为１．０×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，Ａｇ（Ⅰ）含量在０．０１１～５．４０μｇ／ｍＬ范围内服从Ｂｅｅｒ定律。所提出的方法用于精铜矿中微量银的测定，相对误差在５．０％以内。     

5─Br─PAN─S与镍显色反应及其分析应用的研究

研究了镍（Ⅱ）与１－（５－溴－２－吡啶偶氮）－２－萘酚－６－磷酸（５－Ｂｒ－ＰＡＮ－Ｓ）的显色反应。在ｐＨ６．０，镍（Ⅱ）与５－Ｂｒ－ＰＡＮ－Ｓ形成１：２的红色配合物，其最大吸收波长在５８０ｎｍ，摩尔吸光系数为５．０×１０４Ｌ·ｍｏｌ－１·ｃｍ－１。镍量在０～２５μｇ／２５ｍＬ范围内符合比尔定律。方法用于铝合金和废水中镍的测定，结果满意。     

用2－（5－溴－2－吡啶偶氮）－5－二乙氨基苯光度法测定镍合金镀层中的镧

叙述镧（Ⅲ）－２－（５－溴－２－吡啶偶氮）－５－二乙氨基苯酚（在ＰＶＡ和ＣＰＢ存在下）胶束增溶配合物的特性。ｐＨ＝１０．１时，Ｌａ３＋与２－（５－溴－２－吡啶偶氮）－５－二乙氨基苯酚（在ＰＶＡ、ＣＰＢ存在下）生成１：４的紫红色配合物。配合物最大吸收峰在６０５ｎｍ，其摩尔吸光系数ε为１．０×１０５Ｌ／ｍｏｌ·ｃｍ。该配合物形成稳定常数（ＬＯｇβ）为１５．９。０～８０μｇＬａ３＋／５０ｍＬ，服从朗伯－比尔定律。此法用于测定镍基合金镀层中的镧，结果令人满意。     

新显色剂7-(苯并噻唑-2-偶氮)-8-羟基喹啉-5-磺酸的分析性能及其与锌显色反应的研究

报道了新显色剂７－（苯并噻唑－２－偶氮）－８－羟基喹啉－５－磺酸（简称ＢＴＨＱＳＡ）的离解常数的测定，同时研究了该显色剂对锌离子光度分析的条件，摩尔吸光系数ε＝５．１×１０４Ｌ·ｍｏｌ－１·ｃｍ－１，锌离子浓度在０～６．５μｇ／２５ｍＬ符合比尔定律，并对人发中的微量锌进行测定。     

新荧光试剂5－（4＇－硝基－2＇－羧基苯基偶氮）－2－硫代－4－噻唑啉酮的合成及其应用研究

报道了５－（４＇－硝基－２＇－羧基苯基偶氮）－２－硫代－４－噻唑啉酮（４ＮＲＡＣＰ）的合成。经柱层析提纯，用元素分析、ＩＲ、１ＨＮＭＲ和ＭＳ确证了其结构，研究了荧光性质，发现该试剂在溴代十六烷吡啶存在下，在无水乙醇溶液中与Ｅｕ（Ⅲ）形成稳定的荧光螯合物，λｅｘ／λｅｍ＝２９０ｎｍ／３４０ｎｍ，其线性范围为１．０×１０－８～１．０×１０－６ｍｏｌ·Ｌ－１，检测限为１．５×１０－１０ｍｏｌ·Ｌ－１。测定了人工合成样品中的铕，结果满意。     

CaO－SiO_2－P_2O_5－H_2O体系中CBC材料的水化产物（一）水化产物组成

利用ＸＲＤ和ＳＥＭＥＤＳ等测试技术对ＣａＯＳｉＯ２Ｐ２Ｏ５Ｈ２Ｏ系统中ＣＢＣ材料的水化产物组成进行了研究。结果表明：随水化进行，ＯＨＡｐ、βＣ２Ｓ和βＣ３Ｐ的量均减少。水化３６５ｄ时，体系中出现了一些不知归属的衍射线，三强线为：０．２０９２（１００），０．８２１６（５６），０．３０９１（４１）。此外在水化产物中出现了两种不知名的水化磷酸盐：７ＣａＯ·３Ｐ２Ｏ５·ｘＨ２Ｏ和６ＣａＯ·Ｐ２Ｏ５·ｙＨ２Ｏ。前者是一种大片状的晶相，后者呈连续的大小不等的圆形小颗粒，难以断定是晶相还是凝胶相。     

2－（5－溴－2－吡啶偶氮）－5－［（N，N－二羧基甲基）氨基］苯酚的合成及其与钴显色反应的研究

新水溶性显色剂２－（５－溴－２－吡啶偶氮）－５－［（Ｎ，Ｎ－二羧基甲基）氨基］苯酚（５－Ｂｒ－ＰＡＤＣＡＰ）的合成。讨论了试剂与钻（Ⅱ）的最佳反应条件。在ｐＨ６．０，配合物的最大吸收波长为６００ｕｍ，摩尔吸光系数达９．５×１０４。所确立的方法可用于维生素Ｂ１２中钴的测定。     

表面活性剂存在下，以3，5－di－Cl－PADAP分光光度法测定微量铁的研究

研究了２－（３，５－二氯－２－吡啶偶氮）－５－二乙氨基酚（３，５－ｄｉ－Ｃｌ－ＰＡＤＡＰ）与Ｆｅ（Ⅱ）的显色条件。在非离子表面活性剂乳化剂ＯＰ存在下，于ｐＨ３．５～６．０的乙酸钠－乙酸缓冲介质中，Ｆｅ（Ⅱ）与３，５－ｄｉ－Ｃｌ－ＰＡＤＡＰ的络合反应瞬时完成，形成１：２的紫红色稳定的络合物，该络合物有两个最大的吸收峰分别为５７０ｎｍ和７５５ｎｍ，相应的表观摩尔吸光系数分别为８．４×１０４和３．９×１０４，铁含量在０～２０μｇ／１０ｍＬ范围内符合比尔定律。选用７５５ｎｍ作为工作波长，可高选择性地测定多种样品中的微量Ｆｅ（Ⅱ），方法灵敏、操作简便、结果满意。     

新试剂2－［2－苯并噻唑偶氮］－1，8－二羟基萘－3，6－二磺酸与铁的显色反应及应用研究

报道了作者新近合成的显色剂与Ｆｅ（Ⅲ）的显色反应。在ＣＴＭＡＢ存在下，Ｆｅ（Ⅲ）与试剂在ｐＨ５．６的缓冲溶液中形成稳定的深紫红色三元配合物，其组成为１：２：１，最大吸收波长为６５５ｎｍ，表观摩尔吸光系数达１．０５×１０５Ｌ·ｍｏｌ－１·ｃｍ－１，灵敏度高，选择性好。Ｆｅ（Ⅲ）含量在０～１０μｇ／２５ｍＬ范围内服从比尔定律。应用于石灰石、镁砂、铝合金及水样中微量Ｆｅ（Ⅲ）的测定，结果满意。     

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。