用锌渣制备高纯氧化锌

介绍了利用锌渣为原料生产高纯氧化锌的方法。采用黄铁矾法除去大部分铁，通过控制ｐＨ值进一步除铁，用锌粉或锌屑还原除去重金属，用氨水为沉淀剂，最终可使氧化锌的含量达９９．８６％以上。     

用油溶性催化剂加氢裂化孤岛减压渣油的研究

介绍了抚顺石油化工研究院开发的油溶性金属催化剂。并以孤岛减压渣油为原料，采用该催化剂在高压釜上进行悬浮床加氢裂化反应试验，馏分油（<538 ℃）收率可达到70％以上。试验结果表明，油溶性金属催化剂具有较高的加氢活性和抑焦性能。     

测定医疗废水中总余氯方法的改进

对现场快速测定医疗废水中总余氯的方法进行了改进，该方法方便、容易掌握，现场测定总余氯能在较短时间内完成，对防止医疗废水的二次污染和交叉感染作用明显．     

Study on the formation of β-crystal during the crystallization process of polypropylene reactor granule

A notable amount of PP β-crystal (30%, by X-ray diffraction pattern) has been found in the PP samples as polymerized at normal static isothermal crystallization conditions without using any extra nucleating agents. Existence of catalyst residues in the sample is decisive, which slows down the crystallization rate facilitating the formation of β-form spherulites. Comparatively, high molecular weight PP favors the formation of β-form spherulites, deducting from no β-crystal detected in the degraded samples. Finally, high isotacticity is also required for obtaining qualitative β-form spherulites, demonstrated by increased β-crystal content after removal of weak crystalline fraction of the sample.     

Bauxite residue (red mud) increases phosphorus retention in sandy soil catchments in Western Australia

The Peel-Harvey estuary on the Swan Coastal Plain, Western Australia has become eutrophic partly because of the leaching of fertiliser phosphorus from sandy soils. The acid, coarse textured sandy soils are predominantly quartz, have a low iron and aluminium content and do not retain phosphorus. Red mud, derived from bauxite, is a by-product of the alumina industry and has the ability to retain phosphorus. Retention of phosphorus is enhanced when the red mud is neutralised with gypsum. Red mud has been suggested as a soil amendment to reduce phosphorus leaching.To investigate the reduction in the leaching of phosphorus from soils amended with red mud, weirs were constructed at the outlets from a pair of catchments to quantify the amount of phosphorus in the streamflow. Both catchments were deep grey Bassendean sand. One of the catchments was treated with 80 t/ha of red mud which had been neutralised with waste gypsum from the phosphate industry. The red mud was applied to the soil surface using conventional fertiliser spreading equipment. The other catchment was untreated.The red mud reduced phosphorus loss by 70% from 13.8 kg/ha on the untreated catchment, to 4.2 kg/ha on the treated catchment. Both catchments were treated with 20.4 kg/ha of phosphorus as superphosphate. The catchment treated with red mud also received a further 41.5 kg/ha of phosphorus from the phosphogypsum that was used to neutralise the red mud.Our results show that red mud reduces phosphorus leaching and is potentially a nutrient management option in sandy soils. Red mud has the potential to reduce the impact of agriculture on the estuarine environment and has implications for the continued expansion and intensification of agriculture in the Peel-Harvey catchment.     

染料及中间体生产中的治理方法三废(Ⅰ)

由于我国染料及中间体行业近三十年来发展迅猛,而染料企业大多数是小型厂,染料品种繁多,在化工系统中,这一行业目前几乎是污染最严重、污染面最大、治理最差的。同时,一些发达国家把污染重、难治理的产品关停,转向发展中国家生产,染料中间体便是其中之一。所以我国大量的小型乡镇企业治理难度就更大了。不同染料生产原料、工艺过程不同,所排“三废”即有共同的特性,又有各自特点,因此需要针对各自的不同分别处理。本文从废气、有机废液和废渣、废水三方面详细叙述了工业上常用的治理方法及适用条件。并例举了几类排放量较大的废水的治理方法。     

渣油加氢催化剂孔结构对反应活性的影响

在3L中型加氢试验装置上考察了渣油加氢脱硫催化剂孔结构对反应活性的影响，试验结果表明，当孔结构发生变化时，催化剂的脱硫、脱氮、脱残炭及脱金属反应活性呈现不同的变化规律。     

高效液相色谱法在农药残留分析中的应用

介绍了高效液相色谱法在农药残留分析中的应用,列举了一些杀虫剂、除草剂、杀菌剂的分析方法,指出了高效液相色谱法在农药残留分析中发展方向。     

灭多威在棉花及土壤中降解动态及残留量研究

按生产上常规用量，每亩喷施２０％灭多威乳油６０毫升防治二代棉铃虫，施药后７天在棉叶上及１４天在土壤中其降解率分别为９８．８１％及８８．０９％；半衰期分别的１．５６天及４．９８天。防治二、三、四代棉铃虫，按有效剂量施药６次，有效成分７２克／亩，棉籽和土壤中的最大残留量分别为０．０２３及０．０８４微克／克；再加大５０％用量，有效成分１０８克／亩，最大残留量仅为０．０３４及０．２１４微克／克。结果表明，灭多威在棉叶上及土壤中降解较迅速，常规用量下，对棉籽及土壤污染较轻。     

常减压蒸馏装置配剂方法比较

对常减压装置的三种配剂方法进行分析比较，从而选出经济、合理的配剂方法。