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可睦电子(KEM)赛默飞色谱与质谱瑞士万通安东帕上海禾工科学仪器武汉科思特仪器梅特勒托利多TA仪器岛津北京豫维惠分仪器天美青岛盛瀚上海纳锘实业上海旭风德国耶拿百欧林上海通微中科惠分大昌华嘉ATAGO 爱拓欧兰科技Waters日立科学仪器普析韵鼎国际上海鑫欣生物杭州克柔姆洽诺斯科技莱伯泰科复纳科学仪器牛津仪器东方德菲仪器冠亚水分仪北京东西分析仪器赛默飞实验室产品上海凯来青岛普仁美析仪器塞塔拉姆SETARAMksst上海力晶海洋光学上海卓光乐枫生物默克上海新仪北京京科瑞达东曹TOSOH赛默飞利曼中国三耀精细北京谱朋弗士达仪器赛诺普中国佳航仪器上海奥法美嘉北京飞驰biotage德国元素Elementar格瑞德曼北京祥鹄聚光科技东京理化济南微纳颗粒仪器赛默飞世尔分子光谱纳谱分析克吕士中国希望世纪JASCO上海谓载嘉德利达北京亿路达青岛埃仑通用上海依阳实业北京瀚时睿科集团哈希HACH培安公司仪电物光富尔邦Sievers分析仪欧波同恒久仪器弗尔德仪器成都科林JULABO-Chemtron北京精微高博力康上海仪电科仪IKA卓立汉光珠海欧美克德祥赛默飞元素分析骏德仪器迹亚国际商贸束蕴仪器睿光科技安拓思PHICHINA安科慧生山东盛泰仪器北京方石亚盛同洲维普赫伊尔QUANTUM量子科学华爱色谱北京哈科上海伯东北京英格海德迪马科技天津恒奥科技LUMEX研一欧世盛科技现代水务天耀科技杭州聚同淘仪科技上海远慕生物科技有限公司上海积利华盛谱信公司亿诚恒达北京科思特北京佳仪来亨科学仪器南京传滴上海中晨江苏摩信中科奥博麟文仪器上海宝中盈北京华阳利民
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等离子体表面改性聚二甲基硅氧烷中动力学过程研究,和频光谱,SFG检测方案(其它光谱仪)
In numerous applications in microfluidics, cell growth, soft lithography, and molecular imprinting, the surface of
poly(dimethylsiloxane) (PDMS) is modified from a hydrophobic methyl-terminated surface to a hydrophilic hydroxylterminated
surface. In this study, we investigated molecular structural and orientational changes at the PDMS-air
interface in response to three commonly used surface modification processes: exposure to long-wavelength ultraviolet
light (UV), exposure to short-wavelength UV that generates ozone (UVO), and exposure to oxygen plasma (OP). The
surfaces of two PDMS compositions (10:1 and 4:1 of base polymer/curing agent) were probed during modification,
using monolayer-sensitive IR + visible sum frequency generation (SFG) vibrational spectroscopy, with two different
polarization combinations. During PDMS surface modification, the peak intensities of CH3 side groups and CH2
cross-link groups decreased, while peak intensities of Si-OH groups increased. There was no significant change in
the average orientation of the CH3 groups on the PDMS surface during modification. The concentration of CH3 groups
on the surface decreased exponentially with time, for all three UV, UVO, and OP modification processes, with first
order kinetics and time constants of approximately 160, 66, and 0.3 min, respectively. At steady state, residual CH3
groups were detected at the PDMS surface for UV and UVO treatments; however, there were negligible CH3 groups
detected after OP modification.
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动力学过程研究,和频光谱,SFG
北京欧兰科技发展有限公司
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空气/水界面中和频产生（SFG）振动光谱,偏振特性,实验装置分析检测方案(其它光谱仪)
Here we report a detailed study on spectroscopy, structure and dynamics of water molecules at
air/water interface, investigated with Sum Frequency Generation Vibrational Spectroscopy (SFGVS).
Quantitative polarization and experimental configuration analysis of the SFG data in different
polarizations with four sets of experimental configurations can shed new lights on our present
understanding of the air/water interface. Firstly, we concluded that the motion of the interfacial
water molecules can only be in a limited angular range, instead rapidly varying over a broad angular
range in the vibrational relaxation time suggested previously. Secondly, because different vibrational
modes of different molecular species at the interface has different symmetry properties, polarization
and symmetry analysis of the SFG-VS spectral features can help assignment of the SFG-VS spectra
peaks to different interfacial species. These analysis concluded that the narrow 3693cm−1 and broad
3550cm−1 peaks belong to C∞v symmetry, while the broad 3250cm−1 and 3450cm−1 peaks belong
to the symmetric stretching modes with C2v symmetry. Thus, the 3693cm−1 peak is assigned to
the free OH, the 3550cm−1 peak is assigned to the single hydrogen bonded OH stretching mode,
and the 3250cm−1 and 3450cm−1 peaks are assigned to interfacial water molecules as two hydrogen
donors for hydrogen bonding (with C2v symmetry), respectively. Thirdly, analysis of the SFG-VS
spectra concluded that the singly hydrogen bonded water molecules at the air/water interface have
their dipole vector direct almost parallel to the interface, and is with a very narrow orientational
distribution. The doubly hydrogen bond donor water molecules have their dipole vector point away
from the liquid phase.
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和频产生（SFG）振动光谱,偏振特性,实验装置分析
北京欧兰科技发展有限公司
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硫酸,短链醇中表面特性检测方案
The uptake and reaction of methanol at the air-liquid interface of 0 to 96.5 wt% sulfuric acid (SA) solutions has been observed directly using vibrational sum frequency generation spectroscopy (VSFG) and Raman spectroscopy. Evidence for the formation of methyl hydrogen sulfate (MHS) was obtained by the presence of a new peak in the 800
cm-1 region, not present in either the neat methanol or concentrated sulfuric acid spectra. This peak is attributed to the singly bonded OSO symmetric stretch of MHS. The maximum yield of MHS with a large SA excess (7 SA : 1 methanol) is shown to be (95 ± 5) % at –(15 ± 2) ºC. No evidence was found to suggest formation of dimethyl sulfate.
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表面特性
北京欧兰科技发展有限公司
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咪唑啉油酰胺的合成及在油气井产出液中的缓蚀性能
（本文章的版权属于文章作者及所属出版机构，下载本文仅作学习研究之用，不得用于商业目的。）
由油酸和二乙烯三胺合成了咪唑啉酰胺YIM 并用红外光谱表征了化学结构。失重法测试结果表明,温度60 ℃、加剂量50 mg/ L 时,在矿化度1. 24 ×105mg/ L 的中原文东油田采出水中, YIM 对Q235 、N80 、J55 钢试片的缓蚀率分别为81. 7 %、75. 6 %和74. 6 %;缓蚀率随CO2 分压增大(0. 2～1. 0 MPa) 而降低,降低幅度以Q235 钢为最大,J55 钢次之,N80 钢最小。根据极化曲线测试数据,在油田采出水中加入YIM 使Q235 钢的腐蚀电位正移,腐蚀电流减小,腐蚀反应的阳极极化率增大,说明YIM 为抑制阳极为主的缓蚀剂;在30～60 ℃区间温度的影响不明显,在70 ℃下YIM 的缓蚀率有所降低。根据交流阻抗测试数据讨论了YIM 对金属表面介电性质的影响。SEM 观测证实YIM 在金属表面形成了吸附膜。
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武汉科思特仪器股份有限公司
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异喹啉季铵盐缓蚀剂FIQ2C在盐酸中的缓蚀行为研究
（本文章的版权属于文章作者及所属出版机构，下载本文仅用于学习研究，不得用于商业目的。）
研究了天然高分子改性异喹啉季铵盐絮凝2缓蚀剂FIQ2C 在10 %盐酸溶液中对Q235 钢的缓蚀性能,
讨论了药剂用量、温度、时间对缓蚀性能的影响,以及FIQ2C 与EDTMP 的协同缓蚀效应,并通过极化曲线、扫描电
镜及俄歇能谱,探讨了FIQ2C 在盐酸介质中的缓蚀机理。结果表明,FIQ2C 在10 %盐酸介质中对Q235 钢具有良
好的缓蚀作用,是一种阴、阳极混合型缓蚀剂。
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武汉科思特仪器股份有限公司
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PBB和PBDE中含量分析检测方案(气质联用仪)
含溴阻燃剂PBB和PBDE是常用的纺织和电子材料阻燃剂，该类阻燃剂在自然环境中很难分解，可通过食物链在动物何人体内积累，给环境和人体造成严重影响。欧盟 (EU) 亦已更改对塑料业的环保条例，在(RoHS)中规定从2006年7月1日全面禁止PBB 及PBDE等溴系阻燃剂的使用。PBDE5和PBDE8将在2004年底前彻底退出日本市场。在美国，部分州通过法案，在2006年1月1日禁止使用PBDE5和PBDE8，2008年1月1日前禁止使用PBDE4。掌握这类阻燃剂在环境和人体中的残留情况极为重要。目前尚未见该类化合物分析的比较成熟的方法报道，本文利用GCMS对该类化合物进行分析。
利用GCMS和DB-5ms薄膜柱分析PBB和PBDE，可以得到比较好的分离效果和灵敏度。
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含量分析
岛津企业管理（中国）有限公司
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HPLC定量测定甲氧基DDT
农药作为一种快速高效而经济的防治有害生物的武器，在保障农业丰收和
促进高产优质高效现代化农业的发展发挥着突出的作用，然而绝大多数的农药尤
其是化学农药及其代谢物和杂质存在着对人畜有益生物的毒害和对环境的影响
等问题，为了提高食品安全程度，农药残留的检验手段成了近几十年来科学工作
者研究的重要课题。本实验对分离成分甲氧DDT（依据美国国家环保局的标准
方法【1】采用凝胶色谱分离系统）用Labtech LC600 高效液相色谱仪依据文献【2】
定量测定其回收率，回收率在95%以上。
————————————————————
[1] 美国国家环保局，METHOD 3640A
[2] WAKOPAK WAKOSIL HPLC application, 20000601-1
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北京莱伯泰科仪器股份有限公司
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4，4′-二偶氮苯重氮氨基偶氮苯与Ag(Ⅰ)的显色反应及应用
4，4′-二偶氮苯重氮氨基偶氮苯在Triton X—10 0存在下与Ag(I)的显色反应。在pH 10．0的硼砂-氢氧化钠缓冲溶液中，试剂与Ag(I)形成1: 1的红色配合物，其最大吸收波长为540nm，表观摩尔吸光系数为7．55×104L·mol-1 ·cm-1，Ag(I)的浓度在0～0．28mg/L范围内符合比耳定律。应用于显影废液 和钮扣电池液中Ag的测定，结果令人满意。
关键词 4，4′-二偶氮苯重氮氨基偶氮苯 银 分光光度法
中图分类号：0657．32 文献标识码：B 章编号：1004—8138(20 03)02—0205—04
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北京普析通用仪器有限责任公司
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用实验和分子模拟方法研究甲烷和氢气在活性碳微球中的吸附
The activated mesocarbon microbeads (a-MCMBs) with high BET specific surface area of 3180m2/g are prepared. Experimental characterization of a-MCMBs is carried out in terms of the adsorption isotherm of nitrogen at 77 K by the ASAP-2010 apparatus. Then, methane and hydrogen adsorption isotherms on a-MCMBs are measured by the IGA-003 gravimetric analyzer at 298 K and 77 K. The pores of a-MCMBs are described as slit-shaped with a pore size distribution (PSD). The PSD is determined by a combined method of grand canonical Monte Carlo (GCMC) simulation and statistics integral equation (SIE) from the experimental isotherm of nitrogen on a-MCMBs. In GCMC simulation, methane and hydrogen molecules are modeled as the Lennard- Jones spherical molecules, and the well-known Steele’s 10-4-3 potential is used to represent the interaction between the fluid molecule and the solid wall. Good agreement between simulated and experimental data indicates that our model represents well the mechanism of adsorption on a-MCMBs. Then, this model is used to predict adsorption of methane and hydrogen over a wide range of pressure up to 12 MPa. The prediction shows that adsorption amount of methane reaches 36 wt % at 298 K and 4 MPa, which is superior to the results in the literature. The hydrogen adsorption amount at 10 MPa can reach 3.2 wt % and 15 wt % at 298 K and 77 K, respectively, which are also higher scores, compared with the other carbon materials.
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北京英格海德分析技术有限公司
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离子色色谱测定醋酸中痕量碘离子的方法
对于醋酸中碘离子的测定过去一直是使用戴安公司AN37和AU140标准方法,以硝酸为淋洗液、AS16离子交换柱分离并以脉冲安培检测（普通银电极）测定常规样品中碘离子.然而，目前普通银电极只能定量检测出几十纳克每毫升的碘离子，远远不能满足实际分析要求。戴安公司最近开发了新型一次性银电极,其具更高的灵敏度，所以可以取代普通银电极来测定痕量的碘离子的含量。但是，该种新型一次性银电极只能以氢氧化钠为淋洗液。所以戴安公司中国应用研究中心根据实际情况建立了用一次性银电极检测和氢氧化钠为淋洗液测定醋酸中碘离子的新方法。
该方法可以定量检测醋酸样品中1ppb的碘离子的含量。方法简便，易于操作。
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赛默飞色谱与质谱
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Derivation of Physical Parameters from Raman Spectra
The Raman spectra of elemental carbon materials are known to be sensitive to polymorphy. For hard carbon films, the spectra of amorphous and diamond-like carbons can be band-fit to separate the contributions of the "graphitic carbon" (G band) from the "disordered carbon" (D band). The spectral behaviour of carbon films has been empirically correlated with thin film physical properties such as hardness, durability, optical transparency, electrical conductivity, thermal conductivity and corrosion resistance, and can be of
use for prediction of these properties without extensive alternative testing.
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HORIBA（中国）
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Online Applications in Phosphorous Chemical Industry
Non-destructive optical monitoring of chemical composition can be
accomplished using Raman Spectroscopy. Raman spectra can be utilised
to distinguish differences in chemical bond structures. This is particularly useful in applications where reactions could progress towards either a desired product or an undesired by-product. The Raman spectrum indicates when local conditions exist which favour one reaction path over another. This qualitative measurement can be developed into a tool to monitor process conditions.
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HORIBA（中国）
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Observing Oxidation Kinetics On an Aluminium Alloy Surface
Metal oxides, in contrast to most metals, are well known to be easily distinguished by their characteristic Raman spectra; their presence can be detected on a scale of micrometers with a Raman microprobe. Often, the
various oxides of a particular metallic ion have significantly different Raman spectra, with even the degree of hydration of the ligated cation generating a tell-tale vibrational fingerprint. Thus, the diverse oxide forms
of a variety of metals, including, for example, iron, nickel, lead, titanium, zirconium, molybdenum, copper, and vanadium, can be distinguished by a fast and non-destructive spectroscopic measurement. In practice, this allows the scientist or engineer to delineate the kinetics of oxidation of any of these species, observing where and when successive species are formed during the oxidation of a raw metal. For example, steel rust exhibits
layers of several oxides of iron, including hematite, lepodocrocite, goethite,and magnetite, with the layer thicknesses and ordering dependent upon the composition of the steel, the conditions of the environment, and the
duration of exposure.
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HORIBA（中国）
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