难降解有机废水的催化氧化法处理

催化氧化法可通过多种途径来加强传统的化学法处理效果，目前已成为难降解有机废水处理的一项重要新技术。本文介绍了光催化氧化法、均相氧化法、多相氧化法(包括电催化氧化法)以及超临界水氧化技术的国内外研究现状及特点，并对其在有机废水中的应用情况和发展前景作了扼要评述。     

循环伏安法研究硝基药物的β—环糊精包含络合物

本文用悬汞电极循环伏安法，研究了甲硝唑、氯霉素、对硝基苯酚和对硝基苯甲酸等药物的伏安性质，用“电流法“测定了药物与β－ＣＤ生成包络物的Ｋｆ值，并讨论其作用及稳定性。     

吸附方波伏库仑法研究：I.简单吸附体系

对简单吸附体系方法伏库仑法进行了理论推导和实验验证，讨论了各种因素对伏库仑曲线的影响，研究表明，对于简单吸附体系，方法伏库仑法的灵敏度和检测限均优于方波伏安法。     

非水滴定法测定苯唑醇含量的研究

建立了农药中间体苯唑醇的分析方法，用指示剂法和电位法对苯唑醇进行了非水滴定的研究，测定结果与高效液相色谱(HPLC)法基本一致，相对标准偏差≤0．20％。     

在Li2O／MgO上以脉冲法研究甲烷氧化偶联

在Ｌｉ_２Ｏ／ＭｇＯ上以脉冲法研究甲烷氧化偶联戚蕴石，卫上方（华东理工大学工业催化研究所，上海，２００２３７）关键词甲烷氧化偶联，晶格氧，脉冲法对甲烷氧化偶联（ＯＣＭ）的研究已有较多报道［１～４］，对其反应机理的研究亦取得了较大的进展．Ｏｔｓｕｋａ［?..     

对位叠式循环方波伏安法：Ⅱ.平行催化体系

本文提出平行催化体系的对位叠式循环方波伏安法，并对共作了系统的研究，推导了这一方法的催化电流理论方程，并用验验证这理论的正确性，得到其各脉冲电流皆为同方向，对位叠式循环催化电流相当于将电流叠加４次，而波形不受方波幅度大小的影响，因而灵敏度和分辨率有较大提高，优于其它方波伏安法。     

胺烷基二茂铁衍生物的合成及其结构与性质的研究

选择不同的胺组分，利用改进的Ugi法合成了一系列含有胺烷基的二茂铁衍生物，并对其结构和性质进行了研究。     

石墨炉原子吸收光谱法测定糖尿病人和健康人血清和尿中微量铬

研究了石墨炉原子吸收光谱法测定糖尿病人和健康人血清及尿中微量的铬，在测定血清铬时，对其蛋白质进行沉淀，有效地降低了基体干扰，该法回收率高，精密度好，在测定健康人和糖尿病人血清和尿中微量铬时，得到满意结果。     

氮中多元标准混合气体的制备

研究用重量法制备氮中多元标准混合气体，对其制备原理、制备装置、气体称量装置，制备过程以及组分气体纯度的分析方法进行了介绍。分析了重量法制备氮中多元标准混合气体定值不确定度的来源，其定值的扩展不确定度小于3％。     

超临界干燥法制备SiO2气凝胶的研究

通过溶胶－凝胶法和超临界干燥技术制得了ＳｉＯ２气凝胶，研究了溶液的ｐＨ值对凝胶时间及气凝胶密度的影响，应用ＸＲＤ、ＳＡＸＳ、ＴＥＭ和等方面对气凝胶样品的结构进行了初步研究，结果表明，ＳｉＯ２气凝胶是连续网络的非晶态纳米多孔固体，其基本粒子的平均直径约１０ｎｍ．     

The determination of metals in organic compounds

Summary A comprehensive review of the methods available for the determination of metals in organic compounds has been made. The following metals have been considered:—sodium, potassium, lithium, rubidium, caesium, magnesium, calcium, barium, strontium, boron, thallium, silicon, germanium, antimony, bismuth, tin, lead, selenium, tellurium, silver, gold, osmium, platinum, copper, cadmium, zinc, mercury, vanadium, chromium, iron, cobalt, nickel, niobium, tantalum, rhenium, titanium, zirconium and uranium.

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Zusammenfassung Eine vollständige Übersicht über Methoden zur Bestimmung von Metallen in organischen Verbindungen wird gegeben. Für folgende Metalle werden Methoden beschrieben: Natrium, Kalium, Lithium, Rubidium, Cäsium, Magnesium, Calcium, Barium, Strontium, Bor, Thallium, Silicium, Germanium, Antimon, Wismut, Zinn, Blei, Selen, Tellur, Silber, Gold, Osmium, Platin, Kupfer, Cadmium, Zink, Quecksilber, Vanadium, Chrom, Eisen, Kobalt, Nickel, Niob, Tantal, Rhenium, Titan, Zirkonium und Uran.

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Résumé On donnait une revue complète des méthodes valables pour le dosage des métaux dans des substances organiques. Des méthodes sont décrites pour les métaux suivants: sodium, potassium, lithium, rubidium, caesium, magnésium, calcium, barium, strontium, bore, thallium, silicium, germanium, antimoine, bismuth, étain, plomb, sélénium, tellure, argent, or, osmium, platine, cuivre, cadmium, zinc, mercure, vanadium, chrome, fer, cobalt, nickel, niobe, tantale, rhenium, titane, zirconium et urane.

     

Elemental content in wheat products of Al-Qusim region, Saudi Arabia using the INAA technique

Wheat is one of the most grown crops in Saudi Arabia. It is grown in various regions of the country. Accurate knowledge of the elemental concentrations in wheat and its products (bran and flour) is of great importance from a nutritional point of view. Wheat samples were obtained from the Al-Qusim region, 300 km northwest of Riyadh, and analyzed. Up to 50 elements (Al, Sb, As, Ba, Br, Cd, Ca, Cs, Cl, Cr, Co, Cu, Ga, Au, Hf, In, I, Ir, Fe, Mg, Mn, Hg, Mo, Ni, K, Rb, Sc, Se, Ag, Na, Sr, Ta, Te, Th, Sn, Ti, W, U, V, Zn, Zr, Ce, Dy, Eu, La, Lu, Nd, Sm, Tb and Yb) were determined in the wheat products. It was observed that the elemental content of bran was much higher than that of white flour.     

Strategy for water analysis using ICP-MS

The developed strategy permits determination in three steps of sixty-seven elements using inductively coupled plasma mass spectrometry (ICP-MS). Sodium, Mg, Si, S, Cl, K, and Ca are determined in a first step; B, Al, P, Cr, Fe, Mn, Ni, Cu, Zn, As, Se, Ag, Cd, Sb, Ba, Hg, and Pb are determined in a second step; and Li, Be, Ti, V, Co, Ga, Ge, Br, Rb, Sr, Y, Zr, Nb, Mo, Sn, Te, I, Cs, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Pt, Au, Tl, Bi, Th, and U are analyzed in a third step. The figures of merit obtained are adequate to carry out water quality monitoring and other hydrochemical studies, such those based in the application of hydrochemical fingerprinting to water management.     

Traceability along the production chain of Italian tomato products on the basis of stable isotopes and mineral composition

The paper shows the variability of stable isotope ratios and mineral composition in tomato and derivatives along the production chain (juice, passata and paste) in order to evaluate the possibility of tracing their geographical origin. The ratios (13)C/(12)C, (15)N/(14)N, (18)O/(16)O, D/H, (34)S/(32)S and the content of Li, Be, B, Na, Mg, Al, P, K, Ca, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, As, Se, Rb, Sr, Y, Mo, Ag, Cd, Sn, Sb, Cs, Ba, La, Ce, Pr, Nd, Sm, Eu, Gd, Dy, Ho, Tm, Yb, Ir, Tl, Pb, U and of nitrates, chlorides, sulphates and phosphates were measured by Isotope Ratio Mass Spectrometry, Inductively Coupled Plasma Mass Spectrometry and Ion Chromatography, respectively. The tomato products were from three Italian regions - Piedmont, Emilia Romagna, and Apulia. By applying linear discriminant analysis on 17 of these parameters (Gd, La, Tl, Eu, Cs, Ni, Cr, Co, δ(34)S, δ(15)N, Cd, K, Mg, δ(13)C, Mo, Rb and U) excellent discrimination among products from the three regions was achieved. Irrespective of the processing technology, over 95% of the samples were correctly reclassified in cross-validation into the production site. The use of these parameters will allow the development of analytical control procedures that can be used to check the geographical provenance of Italian tomatoes and products derived from them.     

A systematic neutron activation analysis of peat from Burundi

Mean concentrations of Al, As, Au, Ba, Br, Ca, Ce, Cl, Co, Cr, Cs, Cu, Eu, Fe, Ga, Hf, Ho, I, K, La, Lu, Mg, Mn, Na, Pr, Rb, Sb, Sc, Sm, Sr, Ta, Tb, Ti, Th, V, W, Yb, and Zr, determined in 6 samples of peat from Burundi, were equal to 3911, 1.7, 0.025, 33, 21, 472, 14, 55, 4.2, 16, 0.43, 14, 0.27, 14675, 1. 2, 1.5, 0.09, 2.9, 203, 5.6, 0.29, 745, 20, 70, 1.5, 13, 2.1, 6.5, 0.8, 6, 0.4, 0.2, 2.9, 392, 15.7, 0.43, 0.09 and 101 ppm resp. The peat in Burundi contain approximately the same concentrations of elements as the peat in other countries. It is enriched in Br and depleted in Ca, K, Mn, Na, Sr and Yb.     

NAA and ICP analysis of obsidian from Central Europe and the Aegean: Source characterisation and provenance determination

INAA and ICPES are compared for their discriminative power in obsidian source characterisation. Geological samples from the Aegean and Carpathian sources were analysed for Na, Sc, Fe, Co, Rb, Sb, Cs, Ba, La, Ce, Sm, Eu, Tb, Yb, Lu, Hf, Ta, Th, U by INAA and for B, Na, Mg, Al, K, Ca, Sc, Ti, Mn, Fe, Zn, Y, Yr, Cs, Ba, La, Ce, Sm, Eu, Gd, Tb, Yb, Lu, Hf by two ICPES procedures. It is shown that all techniques work successfully, however, INAA is more efficient in the chemical discrimination of neighbouring sources.     

Synthesis of 2‐Arylquinazolin‐4(3H)‐ones by N‐Aryl Benzamidines with Aromatic Carbonates

The reaction of N‐aryl benzamidines 1a , 1b , 1c , 1d , 1e , 1f , 1g , 1h , 1i , 1j , 1k , 1l , 1m , 1n with diphenyl carbonate 2a or ethyl phenyl carbonate 2b synthesized 2‐arylquinazolin‐4(3H)‐ones 3a , 3b , 3c , 3d , 3e , 3f , 3g , 3h , 3i , 3j , 3k , 3l , 3m , 3n in simple and safe process with good yields (71–90%). It was suggested that different electron‐donating substituent in N‐aryl benzamidines 1a , 1b , 1c , 1d , 1e , 1f , 1g , 1h , 1i , 1j , 1k , 1l , 1m , 1n afforded similar effect to the yields of 2‐arylquinazolin‐4(3H)‐ones 3a , 3b , 3c , 3d , 3e , 3f , 3g , 3h , 3i , 3j , 3k , 3l , 3m , 3n . In these reactions, N‐aryl benzamidines 1a , 1b , 1c , 1d , 1e , 1f , 1g , 1h , 1i , 1j , 1k , 1l , 1m , 1n built up intermediate compounds by nucleophilic addition to carbonates 2 to give annulation products 3a , 3b , 3c , 3d , 3e , 3f , 3g , 3h , 3i , 3j , 3k , 3l , 3m , 3n , following to cyclization involving the elimination of ethanol/phenol.     

Der Nachweis organischer Farbstoffe durch Mikrosublimation. II Besonderer Teil

Zusammenfassung Folgende organische Farbstoffe, die entweder als Pulver oder auch als Ausfärbung oder als Druck vorlagen, gaben kennzeichnende Sublimate:Indischgelb G, Dianilgelb G, die Hansagelbsorten 10 G, 5 G, 5 G transparent, 3 G, G, G transparent, GGR extra, GR, 3 R, Litholechtgelb RN, Helioechtgelb 6 GL, Litholechtorange RN, Permanentrot R extra, Litholechtscharlach RN (Hansarot B), Litholechtscharlach B, Permanentrot FRL, Autolrot BL, Autolrot RLP, Brillant-Indigo BASF, Indanthrengelb G, Indanthrenbraun G, Indanthrenblau RSN, Indanthrenviolett FFBN, Indanthrengelb 7 GK, Indanthrenbrillantorange GR, Indanthrenbrillantorange RK.

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Summary The following organic dyestuffs which were present either as powders or as dyed or printed material, gave characteristic sublimates:Indian yellow G, dianil yellow G, the 10 G, 5 G, 5 G transparent, 3 G, G, G transparent, GGR extra, GR, 3 R brands of Hansa yellow, lithol-fast yellow RN, helio-fast yellow 6 GL, lithol-fast orange RN, permanent red R extra, lithol-fast scarlet RN (Hansa red B), lithol-fast scarlet B, permanent red FRL, autol red BL, autol red RLP, brilliant indigo BASF, indanthrene yellow G, indanthrene brown G, indanthren blue RSN, indanthrene violet FFBN, indanthrene yellow 7 GK, indanthrene brilliant orange GR, indanthrene brilliant orange RK.

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Résumé Les pigments organiques suivants, qui étaient à notre disposition, soit comme poudre, soit comme colorisation ou comme impression, donnèrent des sublimés caractéristiques:Indischgelb G, Dianilgelb G, les sortes de Hansagelb 10 G, 5 G, 5 G transparent, 3 G, G, G transparent, GGR extra, GR, 3 R, Litholechtgelb RN, Helioechtgelb 6 GL, Litholechtorange RN, Permanentrot R extra, Litholechtscharlach RN (Hansarot B). Litholechtscharlach B, Permanentrot FRL, Autolrot BL, Autolrot RLP, Brillant-Indigo BASF, Indanthrengelb G, Indanthrenbraun G, Indanthrenblau RSN, Indanthrenviolett FFBN, Indanthrengelb 7 GK, Indanthrenbrillantorange GR, Indanthrenbrillantorange RK.

     

Systematic study of the solvent extraction of metal oxinates

The extraction of 32 metals (Be, Mg, Ca, Sr, Ba, Sc, La, Ti, Zr, Th, V, Nb, Cr, Mo, W, U, Mn, Fe, Co, Ni, Pd, Cu, Ag, Zn, Cd, Hg, Al, Ga, In, Tl, Pb and Bi) with oxine solution has been studied. The effects of pH, oxine concentration and water-soluble complexing agents (oxalic acid, tartaric acid, hydrocyanic acid, nitrilotriacetic acid, ethylenediaminetetraacetic acid and 1,2-diaminocyclohexanetetraacetic acid) have been investigated. From these results the extraction constants and stability constants ot the metal complexes with the various complexing agents investigated have been calculated.