通过高温缩合反应合成了三聚磷酸铁(FeH2P3O10·2H2O),采用扫描电镜(SEM)和X射线衍射(XRD)进行了表征,初步研究了其防锈性能,以及作为前驱体所合成的三聚磷酸铁锂正极材料的比容量和库伦效率.结果表明,所合成的三聚磷酸铁颗粒为类球形,粒径约0.5～1μm,防锈性能略优于三聚磷酸铝.三聚磷酸铁锂的比容量为210 mAh·g-1,明显高于磷酸铁锂的理论比容量(170mAh·g-1),库伦效率接近100％,充放电可逆性好.该材料具有优良的防锈性能和电化学性能,具有很好的潜在应用前景.

紫外光固化水性聚氨酯丙烯酸酯(UV-WPUA)涂料因结合了水性高分子技术和紫外光固化技术而备受关注,是近年来高分子材料领域的研究热点.本文对UV-WPUA涂料及其重要组分的制备方法、改性方法及应用等内容进行综述.同时提出了UV-WPUA涂料存在的问题及未来的发展趋势.

为回收利用双氧水生产过程中产生的废弃蒽醌再生催化剂(主要成分为活性α-氧化铝),以乙醇为浸取液,在超声条件下对废弃蒽醌再生催化剂进行超声浸取,再对经浸取后的蒽醌再生剂进行高温焙烧,最后经过盐酸溶解及水解聚合等过程制备了聚氯化铝.考察了超声浸取时间、焙烧温度、盐酸与蒽醌再生催化剂焙烧料固液比、水解聚合pH及水解聚合反应温度等因素对氧化铝溶出率和聚氯化铝中氧化铝含量的影响.结果表明,在乙醇超声浸取2h、焙烧温度为700℃、盐酸与蒽醌再生催化剂焙烧料质量比为5∶1的条件下,氧化铝溶出率为81.2％;在水解pH为4.0～4.4、水解聚合反应温度为80℃的工艺条件下,得到的聚氯化铝产品中氧化铝质量分数为33％,盐基度为81％.该产品絮凝能力良好,可应用于废水净化处理.

[Aims] Determination of mixture formulation of glufosinate and glyphosate by high-performance liquid chromatography (HPLC) with fluorescence detector and uv-vis spectrophotometer was studied.[Methods] Determination ofglufosinate was conducted with o-phthalaldehyde as the derivating agent,the mixture of methanol and 0.05 mol/L of potassium dihydrogen phosphate (35:65,by vol) as mobile phase,C18 chromatographic column as stationary phase at excitation wavelength of 295 nm and emission wavelength of 450 nm by HPLC with fluorescence detector after derivative.Determination of glyphosate was conducted by uv-visible spectrophotometer at 242 nm after the nitrosation reaction.[Results] When the concentration of glufosinate was 30-70 mg/L,the linear correlation coefficient was 0.9957,and the limit of detection was 0.53 mg/L.When the concentration of glyphosate was 5-25 mg/L,the linear correlation coefficient was 0.9986,and the limit of detection was 0.02 mg/L.[Conclusions] The method has the advantages of simple,high sensitivity and reproducibility,which is suitable for the analysis of mixture formulation of glufosinate and glyphosate.

Bstract: The glyphosate mother liquid contained the large amounts of formaldehyde and CODCr,so it was difficult to disintegrate and drain off. The nanofiltration process was applied to recycled most of glyphosate from the glyphosate mother liquid. Then the nanofiltration concentrated solution reacted with calcium oxide. By this (nanofiltration recycling glyphosate + calcium oxide) treatment process, the wastewater treatment effect and the recovery rate of glyphosate got ideal result.

After concentration, the glyphosate wastewater reacted with quicklime for 60min. Hydrochloric acid was added into filter cake to make pH=2.0. The filtrate was crystallized by refrigerated overnight. After filtered, washing and drying, glyphosate powder was got. The glyphosate recovery was more than 85%.

以28日龄杜长大三元杂交断奶仔猪为对像，以仔猪基础日粮中不添加外源铁为对照（CK），以在基础日粮中添加75、100、125、150 mg／kg蔗糖铁为处理，研究蔗糖铁对断奶仔猪生产性能的影响。结果表明，与处理1（ CK）相比，日粮中以蔗糖铁形式添加铁元素125 mg／kg时，仔猪平均日增质量、平均日采食量分别提高18．18％和8．20％（P＜0．05），料重比、腹泻率和死亡率分别下降8．65％、29．89％和43．18％（P＜0．05）；经济效益分析发现，与处理1（CK）相比，日粮中以蔗糖铁形式添加125 mg／kg铁元素时，毛利润提高23．17％（P＜0．05）。因此，在断奶仔猪日粮中添加蔗糖铁能够促进断奶仔猪的生长，降低料重比，降低腹泻以及死亡率，提高经济效益，且以添加125 mg／kg铁元素效果最佳。

试验研究蔗糖铁对断奶仔猪生长性能和血液指标的影响.选择180头28日龄杜长大三元杂交断奶仔猪,随机分成6个处理,每个处理3个重复,每个重复10头猪;在仔猪基础日粮中不添加外源铁构成处理1即对照组(CK),在基础日粮中以蔗糖铁形式分别添加铁元素75、100、125、150 mg/kg构成处理2、3、4、5,在基础日粮中以硫酸亚铁形式添加铁元素150 mg/kg构成处理6,试验正式期42 d.结果表明,与处理1(CK)相比,日粮中以蔗糖铁形式添加铁元素125 mg/kg时,仔猪平均日增重、平均日采食量分别提高18.18％和8.20％ (P＜0.05),料重比、腹泻率和死亡率分别下降8.65％、29.89％和43.18％ (P＜0.05);血红蛋白含量提高22.75％(P＜0.05);与处理6(150 mg/kg硫酸亚铁)相比,日粮中以蔗糖铁形式添加铁元素125 mg/kg时,仔猪平均日增重、平均日采食量分别提高14.71％和6.45％(P＜0.05),料重比、腹泻率和死亡率分别下降7.65％、29.1％和42.16％(P＜0.05);血红蛋白含量提高16.56％(P＜0.05).蔗糖铁对断奶仔猪有良好的促生长作用,也在一定程度上提高了仔猪血液中血红蛋白和IgG浓度.

Iron supplement in animal husbandry is widely used. The application research progress of iron supplement in animal husbandry at home and abroad was reviewed.

Potassium diformate was synthesized from formic acid and potassium hydroxide.The optimum reaction conditions were determined. The results showed when the mole ratio (formic acid∶potassium hydroxide) was 2.5∶1,reaction time was 2h and reac-tiontemperature was 60℃,the yield was more than 90%.

The dextran enzyme was a special enzyme for degradation of dextran.It could degrade dextran-20(average Mw 16000~24000Da) to super micro-molecular dextran(average Mw 3000~6000Da).The results showed that when the substrate concentration was 30%(w/w),the reaction time was 10min and enzyme dosage was 69U/g,Dextran-20 was degraded to super micro-molecular dextran.The product had excellent performance,stable quality and narrow molecule weight distribution.

<正>1锌的营养作用及有机锌的分类1.1锌的营养作用锌的营养功能与多种酶有关,尤其对金属酶具有催化性、结构性和调节性功能,这些酶类主要包括氧化还原酶(超氧化物歧化酶)、转移酶(RNA聚合酶)、水解酶(碱性磷酸酶)、裂解酶(碳酸酐酶)

Organic iron was green feed or food additives containing iron,it had good chemical stability and biological absorption and utilization rate.In this paper,synthesis research progress in organic iron at home and abroad was reviewed.

铬是人和动物的必需微量元素.而对效力高,吸收率好的铬源营养添加剂--吡啶甲酸铬的研究应用已经有近20年的时间.本文对吡啶甲酸铬近些年来的有关基础研究、合成工艺及应用研究作概括性的简介.

Two main producing techniques of glyphosate were reviewed,and the improvement of glyphosate was introduced.

The present study was conducted to study the effect of chlorpyrifos cartap granule(8%) on controlling sugarcane borer under filed conditions.The pesticide terbufos granule(5%) @ 3.0 kg ai/ha was used as the control,and chlorpyrifos cartap granule(8%) was applied @ 2.0,2.5 and 3.0 kg active ingredients(ai)/ha in loose and uphill soil.The application of chlorpyrifos cartap granule(8%) resulted in over 75% control efficacy on sugarcane borer after applying 60 and 90 days,though it was quite similar to the control,there were no significant differences.On the basis of results obtained in this study,it is suggested that 8% chlorpyrifos cartap granules may be used to control sugarcane borer when applied @ 2.0-3.0 kg ai/ha at the time of planting for plant crop or loosening soil for ratoon crop.

The thermal stabilities of 4 kinds of insecticides in 6 kinds of fertilizers are determined,the results show that the decomposition rate of terbufos in MAP is of 4.7%, thermal decomposition rates of pesticide both chlorpyrifos and cartap are qualified of less than 5% mixed in the compound fertilizer with m(urea) ∶ m(MAP) ∶ m(KCl) = 2 ∶ 1 ∶ 1 respectively,however,thermal stabilities of carbofuran in 6 kinds of fertilizers are bad.

The quantitative analysis of glyphosate and N-(phosphonomethyl)iminodiacetic acid was conducted using HPLC with potassium dihydrogen phosphate buffer solution as mobile phase, Hypersil SAX column, flow rate: 0.8 mL/min, using UV detector at 195 nm wavelength to quantitative analysis glyphosate and N-(phosphonomethyl)iminodiacetic acid at the same column. The results showed that linear correlation for glyphosate and N-(phosphonomethyl)iminodiacetic acid were 0.999 9 and 0.998 4, the standard deviation were 0.089 9 and 0.770 1, the variation coefficient were 0.162 0% and 0.966 0%, respectively.

The research progress of glyphosate production by the oxidation of N-(phosphonomethyl)iminodiacetic acid with oxygen or oxygen-containing gas as oxidizing agent in the presence of catalysts was reviewed.

glyphosate synthesis from N-phosphonomethyliminodiacetic acid(PmiDA) by oxidazing of oxygen along with the catallysis of activated carbon under the low pressure is studied.The results of the experiment show that when presure is 0.2 mPa,temperature is 80 °c,time is 100 min and the concetration of PmiDA is 15%,the yield of glyphosate can be up to 96%.