用高效液相色谱法同时测定葡萄酒中4种色素含量方法的研究

为了建立同时测定葡萄酒中喹啉黄、坚牢绿、偶氮玉红（又名酸性红,二蓝光酸性红）和专利蓝等4种色素含量的高效液相色谱方法,采用样品除去乙醇,经水提取和过滤后,使用C18色谱柱（4．6×250mm,5μm）分离,以甲醇和乙酸铵（0．02mol／L）为流动相梯度洗脱,流速为1．0mL／min,二极管阵列检测器检测,波长410nm,柱温30℃。结果显示：4种色素的工作曲线在1．0～50．0μg／mL范围内浓度与峰面积呈良好的线性关系,相关系数r均〉0．999。以S／N=3确定各检出限：喹啉黄为0．23mg／kg,坚牢绿为0．37mg／kg,偶氮玉红为0．29mg／kg,专利蓝为0．15mg／kg。精密度（RSD,n=6）〈3．0％。回收率在91．5％～100．8％。说明该方法干扰小,灵敏度高,分离效果好,操作简便、快速和准确可靠。     

Controlled one-pot synthesis of RuCu nanocages and Cu@Ru nanocrystals for the regioselective hydrogenation of quinoline

RuCu nanocages and core–shell Cu@Ru nanocrystals with ultrathin Ru shells were first synthesized by a one-pot modified galvanic replacement reaction. The construction of bimetallic nanocrystals with fully exposed precious atoms and a high surface area effectively realizes the concept of high atom-efficiency. Compared with the monometallic Ru/C catalyst, both the RuCu nanocages and Cu@Ru core–shell catalysts supported on commercial carbon show superior catalytic performance for the regioselective hydrogenation of quinoline toward 1,2,3,4-tetrahydroquinoline. RuCu nanocages exhibit the highest activity, achieving up to 99.6% conversion of quinoline and 100% selectivity toward 1,2,3,4-tetrahydroquinoline.

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磷酸缓蚀剂的研究

采用失重法和电化学方法对碳钢在磷酸溶液中腐蚀行为及喹啉季铵盐等在磷酸中的缓蚀作用进行试验,结果表明,碳钢在磷酸中的腐蚀速率随磷酸浓度增大而增加,但在磷酸浓度大于４０％以上,碳钢腐蚀速率则随磷浓度增大而变化缓慢。喹啉季铵盐是较好的磷酸缓蚀剂,它与碘化物有协同作用,文中还讨论了缓蚀剂的作用机理。     

五氧化二磷快速测定方法探讨

建立了磷钒钼黄比色测定氮磷复合肥中水溶性磷、有效磷的测定方法,此法简便、快速、准确,满足中控分析要求.此法也适用于磷酸一铵中水溶性磷、有效磷的测定.     

新显色剂6-甲氧基苯并噻唑偶氮-8-羟基喹啉-5-磺酸的合成及其与镍的显色反应研究

７－［６－甲氧基－（２－苯并噻唑偶氮）］－８－羟基喹啉－５－磺酸是一种新合成的显色剂。该试剂在弱酸性（ｐＨ４．５）介质中,与镍形成紫红色络合物。络合物的λｍａｘ＝５８０ｎｍ,表观摩尔吸光系数ε＝６．０８×１０４Ｌｍｏｌ－１ｃｍ－１,线性范围Ｎｉ（Ⅱ）０～１０μｇ／１０ｍＬ。用拟定的方法测定了合金钢及铝合金中的镍,加入回收率为９７％～１０５％,方法的相对标准偏差小于１．５％。     

季粦盐三丁基十四烷基氯化粦(TTPC)的测定

研究了以硝酸和高氯酸为氧化分解剂,将ＴＴＰＣ中的有机膦转化为正磷,用磷钼酸喹啉容量法测定ＴＴＰＣ中磷的方法,确定了最佳分解条件和测定条件,用于实际样品测定,取得了满意的结果     

尿素聚磷酸铵的聚合度测定方法研究

采用纸层析分离－－磷钼酸喹啉重量法综合测定固体尿素聚的聚合度Ｋ值,该测定方法经中科院重庆情报所查新中心定论为国内未见报导。     

自固定化高效菌种强化处理焦化废水研究

以喹啉为唯一碳源驯化高铲菌种,将其一部分附着在陶粒载体上,比较了自化前后菌种活性的变化,然后在用活性污泥处理焦化废水时,以三种投加高效菌种的方式强化处理焦化废水：（１）只投加悬浮高效菌种,（２）投加悬浮高铲菌种和空白陶粒,（３）投加附着有效高效菌种的陶粒,研究了不同投加方式对保持菌种高效降解特性的作用。     

5-(1-苯乙基)-8-氨基喹啉的合成工艺

以N-(喹啉-8-基)新戊酰胺和DL-1-苯乙醇为原料,酸酐为添加剂,无水三氯化铁为催化剂,1,2-二氯乙烷为溶剂制备标题化合物,产品结构经1HNMR和13CNMR表征。通过单因素实验,考察添加剂的种类、反应时间、反应温度、催化剂用量、添加剂用量对反应收率的影响,最终确定合成标题化合物的最佳条件为:n(N-(喹啉-8-基)新戊酰胺)∶n(DL-1-苯乙醇)∶n(添加剂)=1∶3∶3,催化剂为20 mol%无水三氯化铁,溶剂为1,2-二氯乙烷,反应温度为140℃、反应时间为24 h,产品收率可达83%。方法原料易得、操作简单、步骤节省,为产品的工业化奠定了基础。     

Synthesis of some novel 2-oxo-pyrano(2,3-b)- and 2-oxo-pyrido(2,3-b)quinoline derivatives as potential antimalarial,diuretic, clastogenic and antimicrobial agents

The 2-chloro-3-formyl quinoline derivatives ( 1a–e ) on treatment with acetic anhydride and sodium acetate, afforded the corresponding novel 2-oxo-pyrano(2,3-b) quinoline derivatives ( 2a–e ), and these were subjected to ammonia treatment to yield the corresponding naphthyridine derivatives ( 3a–e ). The prepared compounds ( 2a–e ) were tested for their antimalarial, diuretic, clastogenic and antimicrobial properties. Not all the compounds showed a diuretic effect and the significant increase in the frequency of micronuclei shows that they are non-clastogens, whereas the 7-chloro derivative ( 2e ) was a very effective antimalarial agent against the mosquito species. All the compounds were found to have optimum antimicrobial activity against Staphylococcus aureus, Escherichia coli and Salmonella typhi. Compounds 2d and 2e were found to be most active against the bacteria tested. © 1998 SCI