1－（2－羟基－3－甲氧基苯甲醛缩氨基）－8－羟基－3，6－萘二磺酸的合成及其光度法测定硼的研究

本文研究了１－（２－羟基－３－甲氧基苯甲醛缩氨基）－８－羟基－３－,６－萘二磺酸的合成以及光度测定硼的方法。在乙酸－乙酸铁缓冲溶液中,硼与成剂形成１：２的黄色络合物,最大吸收波长在４２０ｎｍ处,摩尔吸光系数为７．１９×１０￣３Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１）,Ｂ的Ｓａｎｄｅｌｌ灵敏度为０．００１５μｇ／ｃｍ￣２：。当硼量在０～３５μｇ／２５ｍｌ范围内符合比尔定律,应用于氧化镁中硼的测定获得满意结果。     

·专利信息·

一种从提金尾渣中浮选铜、铅、锌精矿的方法；一种快速无毒提金法；纳米银／溴化银可见光光催化材料及其制备方法。     

BPS树脂对钯的吸附特性及应用

本文研究了具有１－［（５－溴－２－吡啶）偶氮］－２－萘酚－６磺酸功能团的螯合形成树脂吸附Ｐｄ￣（２＋）的特性,发现吸附的最佳ｐＨ为１～４,吸附容量１．１５ｍｍｏｌ／ｇ干树脂,吸附速率常数为３３×１０￣（－４）。在柱法操作条件试验基础上建立了树脂分离富集－原子吸收测定钯催化剂中微量钯的方法。     

银在铋系高温超导体中的作用及应用

从五个方面综述了银在Ｂｉ－Ｐｂ－Ｓｒ－Ｃａ－Ｃｕ－Ｏ系（ＢＰＳＣＣＯ）超导体中的作用及应用，包括：（１）银与铋系超导体的基本复合方式；（２）银与Ｂｉ－Ｐｂ－Ｓｒ－Ｃａ－Ｃｕ－Ｏ系的物理化学作用；（３）银复合对铋系超导相生长的影响；（４）银复合对铋系超导体超导电性的影响，（５）银复合对铋系超导体材料力学性能的影响。     

5－Br－PADAT分光光度法测定微量铂

本文研究了显色剂５－（５－溴－２－吡啶偶氮）－２,４－二氨基甲苯（５－Ｂｒ－ｐＡＤＡ）与铂（Ⅱ）的显色反应。在正丙醇存在下,在０．２￣１．０ｍｏｌ／ＬＨ＿３ＰＯ＿４介质,Ｈ飞介质中,放置３５ｍｉｎ,铂与５－Ｂｒ－ｐＡＤＡＴ形成稳定的１：１蓝紫色配合物,其最大吸收波长在６０２ｎｍ处,表现摩尔吸光系数为７．９×１Ｏ￣４·ｍｏｌ￣－１·ｃｍ￣－１．铂量在０～２５μｇ／２５５ｍｌ范围内符合比尔定律。应用本法测定了催化剂中微量的铂,结果满意。     

7-〔6-甲氧基-(2-苯并噻唑偶氮)〕-8-羟基喹啉-5-磺酸双波长光度法测定钴和镍的研究

７－〔６－甲氧基－（２－苯并噻唑偶氮）〕－８－羟基喹啉－５－磺酸（６－ＣＨ３Ｏ－ＢＴＡＱＳ）与钴、镍有灵敏的显色反应,但两种络合物的光谱严重重叠,利用双波长标准加入法进行了同时测定,试样分析结果令人满意。     

Effects of the Cr<Subscript>2</Subscript>O<Subscript>3</Subscript> Content on the Viscosity of CaO-SiO<Subscript>2</Subscript>-10 Pct Al<Subscript>2</Subscript>O<Subscript>3</Subscript>-Cr<Subscript>2</Subscript>O<Subscript>3</Subscript> Quaternary Slag

The present study experimentally investigates the effect of Cr₂O₃ on the viscosity of molten slags. The viscosities of CaO-SiO₂-10 pct Al₂O₃-Cr₂O₃ quaternary slags with two different binary basicities (R, basic slag with R = 1.2 and acidic slag with R = 0.8) were measured by the rotating cylindrical method from 1813 K to 1953 K (1540 °C to 1680 °C). The results showed that the viscosity of both types of slag decreased as the Cr₂O₃ content increased, but the viscosity of acidic slags exhibited a greater decrease. The slags showed good Newtonian behavior at such high temperatures. Cr₂O₃ could act as a network modifier to simplify the Si-O-Si tetrahedral structure, as verified by the Raman spectral analysis, which was consistent with the decreasing trend of viscosity. The activation energy of viscous flow decreased slightly with increasing Cr₂O₃, but increasing the basicity seemed to be more effective in decreasing the viscosity than adding Cr₂O₃.     

新荧光试剂5－（4＇－硝基－2＇－羧基苯偶氮）－4－氧代－2－硫代四氢噻唑的合成及分析应用研究

本文报道了新荧光试剂５－（４＇－硝基－２＇－羧基苯偶氮）－４－氧代－２－硫代四氢噻唑（４ＮＣＰＯＢＴ）的合成及其荧光分析应用。确证了其结构。研究了荧光性质,发现该试剂在溴代十六烷基吡啶存在下,在无水乙醇溶液中与Ｅｕ（Ⅲ）形成稳定的荧光螯合物,其线性范闲为１０×１０￣（－８）～１０×１０￣（－６）ｍｏｌ／Ｌ,检测限为１．５×１０￣（－１０）ｍｏｌ／Ｌ。测定了人工合成样品中的铕,结果满意。     

1-(8-氨基喹啉-5-偶氮)-8-羟基-3,6-萘二磺酸与铜的显色反应研究

研究了新显色剂 1 (8 氨基喹啉 5 偶氮 ) 8 羟基 3 ,6 萘二磺酸 (简称AQAHNA)与铜 (Ⅱ )的显色反应条件。在Tween 80存在下 ,pH5 0的乙酸 乙酸钠缓冲溶液中 ,AQAHNA与铜形成 2∶1的红紫色络合物 ,其最大的吸收峰位于5 90nm ,表观摩尔吸光系数 (ε)为 8 7× 10 4 。铜浓度在 0～ 0 4mg/L范围内遵守比尔定律。该方法用于铝合金中铜的测定 ,结果满意。     

A new experimental technique for determinations of the activities of P<Subscript>2</Subscript>O<Subscript>5</Subscript> and Fe<Subscript>x</Subscript>O—the system CaO-P<Subscript>2</Subscript>O<Subscript>5</Subscript>-Fe<Subscript>x</Subscript>O

An experimental technique was applied for simultaneous determinations of the activities of P₂O₅ and Fe_xO in slags. With this technique, phosphorus-containing liquid copper was heated inside an iron crucible at temperatures below 1600 K. When copper is melted, the iron crucible dissolves into liquid copper, to a small extent, to form ternary {Cu-Fe-P} liquid alloy, while 〈Cu-Fe-P〉 solid solutions are formed on the inner wall of the iron crucible. Slags containing tri-calcium phosphate were then brought into equilibrium with {Cu-Fe-P} liquid alloy. By measuring the equilibrium oxygen partial pressures with the aid of a zirconia electrolyte cell, activities of P₂O₅ and Fe_xO were obtainable. Between 1553 and 1593 K, the P₂O₅ activities could be expressed as

Solid Phase Equilibrium Relations in the CaO-SiO<Subscript>2</Subscript>-Nb<Subscript>2</Subscript>O<Subscript>5</Subscript>-La<Subscript>2</Subscript>O<Subscript>3</Subscript> System at 1273 K

Silicate slag system with additions Nb and RE formed in the utilization of REE-Nb-Fe ore deposit resources in China has industrial uses as a metallurgical slag system. The lack of a phase diagram, theoretical, and thermodynamic information for the multi-component system restrict the comprehensive utilization process. In the current work, solid phase equilibrium relations in the CaO-SiO₂-Nb₂O₅-La₂O₃ quaternary system at 1273 K (1000 °C) were investigated experimentally by the high-temperature equilibrium experiment followed by X-ray diffraction, scanning electron microscope, and energy dispersive spectrometer. Six spatial independent tetrahedron fields in the CaO-SiO₂-Nb₂O₅-La₂O₃ system phase diagram were determined by the Gibbs Phase Rule. The current work combines the mass fraction of equilibrium phase and corresponding geometric relation. A determinant method was deduced to calculate the mass fraction of equilibrium phase in quaternary system according to the Mass Conservation Law, the Gibbs Phase Rule, the Lever’s Rule, and the Cramer Law.     

微量钪对Al-Mg-Mn合金组织与性能的影响

采用铸锭冶金法制备了Al-Mg-Mn和Al-Mg-Mn-Sc两种合金，利用TEM和金相显微镜等手段研究了微量Sc对Al-Mg-Mn合金组织与性能的影响。结果表明：加入微量Sc可以提高Al-Mg-Mn合金的拉伸力学性能。在电镜下可以观察到，在Al-Mg-Mn合金中加入微量Sc可以形成大量弥散的Al3Sc粒子，这些粒子对位错具有钉扎作用。     

江阴兴澄钢铁有限公司EAF-LF(VD)-连铸-连轧特殊钢生产线

江阴兴澄钢铁有限公司炼钢、精炼、连铸、连轧四位一体特殊钢生产线的全套设备由德国DEMAG公司总承包,主要从德国DEMAG和SKET引进,是一整套具有90年代先进水平的全新装备,设计年产量:钢为65万t、材为60万t.主要设备有:100 t超高功率直流电弧炉、100 t LF钢包精炼炉、100 t VD真空脱气炉、5流弧形大方坯连铸机、16机架全连轧机组.整条四位一体生产线从南到北全长600 m,总投资近20亿元,主体设备总重量1 2000多吨.     

钼（Ⅳ）─3，5─diBr─PADAP─盐酸羟胺多元混配体系显色反应的研究及其分析应用

在ｐＨ２．４～３．５的酸性介质中及加热条件下,钼（ＶＩ）与２－（３,５一二溴－２－吡啶偶氮）－５－二乙氨基苯酚（３,５－ｄｉＢｒ－ＰＡＤＡＰ）及羟胺反应形成一种稳定的蓝色络合物,组成比为１：１：１。在十二烷基硫酸钠存在下,其最大吸收波长为６ｌ８ｎｍ,表现摩尔吸光系数为４．８×ｌ０￣４,钼含量在０～２５μｇ／１０ｍｌ时服从比尔定律。毫克量钨无干扰。铜、钴、镍、铁等高厂的干扰可通过离厂交换分离除去。本法用于测定软磁合金中的铝,获得了满意的结果。     

2－（8′－羟基喹啉－5′－磺酸－7′－偶氮）变色酸双波长增敏法测定镁

本文报导了Ｍａ＿２Ｂ＿４Ｏ＿７－ＮａＯn缓冲体系中,２－（８’－羟基喹啉－５’－磺酸－７’－偶氮）变色酸（８Ｑ５ＳＡＣ）与镁形成络合物,以试剂的最大吸收６４２ｎｍ为参比波长λ,以络合物的最大吸收５２４ｎｍ为测量波长λ＿２,用双波长增敏法测得表现摩尔吸光系数为２．ｌ×ｌ０￣６。试剂与镁的络合比为１：１,镁量在０￣１５μｇ／２５ｍｌ符合比尔定律,方法用于铸造铝合金中镁的测定,结果满意。