新型吡唑联吡咯类杂环化合物的合成及杀菌活性

为寻找具有更高生物活性、更环保的新农药杀菌剂,基于杀菌剂氟咯菌腈设计并合成了10个新型吡唑联吡咯类杂环化合物,以吡唑环代替氟咯菌腈上原有的苯环,以期提高其杀菌活性.采用1H NMR,FTIR,单晶X射线衍射、元素分析和熔点测定等测试手段对目标化合物及其中间体的结构进行了表征与确认,并通过挥发法培养得到了6个目标化合物的单晶.还对其中6个化合物进行了生物活性测试,测试结果表明各化合物对水稻纹枯病、黄瓜灰霉病、黄瓜霜霉病均表现出一定的抑菌效果,可作为先导化合物对其结构进行深入的研究,为新农药杀菌剂的开发提供了理论支持.     

GEOCHEMISTRY OF ELEMENTS AS EVIDENCE FOR SEDIMENTATION-SUPERIMPOSITION FORMING AISHANG TUNGSTEN DEPOSIT IN JIANGXI PROVINCE

By the study of the trace elements in the Zishan formation of lower Carboniferons occurring in the Aishang mining area and its surroundings, the present paper proves that the Zishan formation is rich in B, Ti, Cu, etc., and contains the derivative tungsten-bearing layers related to local accumulation of the heavy minerals in genesis. The superimposition by the late granite has made the tungsten-bearing layers a strata-bound tungsten deposit. It has been concluded that the fundamental tungsten-bearing formation and the Zishan formation give tungsten and essential associated elements such as 13, Ti and Cu for forming the deposit, while the late granite supplies heat energy and superimposed composition such as Be and F.     

烯唑醇锌盐配合物的合成与结构表征

合成了 2个新配合物ZnL4 Cl2 和ZnL4 (H2 O) 2 ·(NO3 ) 2 (L =烯唑醇 ) ,通过元素分析、IR光谱和核磁共振谱表征了配合物的结构 .X射线单晶衍射结构分析表明 :ZnL4 Cl2 晶体属三斜晶系 ,空间群P墿,晶胞参数 :a =0 882 80(7)nm ,b =1 370 94(11)nm ,c=1.5 182 9(13)nm ,α =91.0 72 (10 )°,β =98 5 97(10 )°,γ =10 6 .779(8)° ,V =1.735 8(2 )nm3 ,Z =1;ZnL4 (H2 O) 2 ·(NO3 ) 2 晶体属单斜晶系 ,空间群Cc,晶胞参数 :a =1.5 2 430 (13)nm ,b =1.5 85 4(2 )nm ,c =3.336 1(4 )nm ,α =90 0 0 0° ,β =10 0 .2 2 7(8)° ,γ =90 0 0 0°,V =7 934 (2 )nm3 ,Z =1     

华南含钨建造的地球化学研究

通过对华南代表性的地层地球化学研究,证实了华南成矿区域中合钨建造的存在。目前已确立的含钨建造主要有元古界、寒武系、泥盆系和石炭系。钨在不同构造带及不同时代含钨建造中的含量各有不同,但共同的地球化学特点是钨的丰度较高,具有一定的微量元素组合和分布型式。钨在含钨建造中的初步富集为华南地区钨的大规模、多样性的矿化奠定了物质基础。     

在线透析-流动注射光度法测定奶及奶制品中尿素含量

建立了在线透析-流动注射光度法测定奶及奶制品中尿素的方法.加人三氯乙酸使样品中蛋白质沉淀,离心过滤去除沉淀的蛋白质,在线透析去除剩余的脂肪及大分子,避免干扰光度分析.在Fe3+存在时,尿素与二乙酰一肟在酸性溶液中水解生成的二乙酰反应生成红色化合物,在534 nm处测量吸光度,加入硫代氨基脲提高显色强度.实验对试剂的浓度...     

湘西地层中的砷锑汞及其赋存特征

湘西是金，砷，锑，汞等有色金属的重要成矿带。区域地层微量元素地球化学研究表明，湘西所出露的地层均显著富集砷，是砷的高区域地球化学异常区，元素存在相态实验进一步表明，新元古界至寒武系中的砷以易迁移形式为主，新元古界至寒武系可能构成砷矿矿源层。其风化所成土壤中砷的含量也一定较高。     

江西隘上沉积-叠加成因钨矿床的元素地球化学判据

本文通过对隘上矿区石炭系梓山组和外围有关地层的微量元素研究,揭示了本区梓山组是一个富含硼、钛和铜等元素的地层,并含有与重砂矿物局部富集有关的衍生含钨层位.后期花岗岩的叠加使含钨层位形成层控钨床.研究结果表明,基底含钨建造和梓山组地层为成矿床提供了钨和主要伴生元素硼、钛和铜,后期花岗岩则为成矿提供了能量和铍、氟等叠加组份。     

4-羧基苯氧乙酸铜配合物[Cu(CBOAH)_2(H_2O)_2]的合成与晶体结构

合成了4-羧基苯氧乙酸铜配合物[Cu(CBOAH)2(H2O)2](CBOAH-为4-羧基苯氧乙酸根阴离子), 对其进行了IR、TG和单晶X-射线衍射等表征。晶体C18H18CuO12 属单斜晶系, 空间群C2/c, 晶胞参数a = 12.298(3), b = 7.380(1), c = 21.413(4) ? ?= 94.00(3), V = 1938.8(7) , Mr = 489.88, Z = 4, Dc = 1.678 g/cm3, ?= 1.194 mm-1, F(000) = 1004, 最终R = 0.0279, wR = 0.0535。2个不同配体的氧乙酸上的羧基氧原子和醚氧原子与铜原子配位, 并形成赤道平面, 2个轴向位置分别被2个水分子所占据, Cu(Ⅱ)离子具有八面体配位构型。热分析结果表明在220℃前配合物是稳定的。     

STUDIES ON GEOCHEMISTRY OF TUNGSTEN-BEARING FORMATIONS IN SOUTH CHINA

The studies on the representative stratigraphic geochemistry have already verified the existence of tungsten-bearing formations in the metallogenetic province of South China. Up till now, it has been established that there are tungsten-bearing formations mainly in the Proterozoic erathem, Cambrian, Devonian and Carboniferous systems. All of them are commonly characterized by high tungsten abundance, certain trace elements combination and distribution type although the tungsten contents of the tungsten-bearing formations are different from the tectonic elements and the passage of time. The preliminary concentration of tungsten in the tungsten-bearing formations has laid the foundation for extensive and diverse tungsten mineralizations in South China.     

GEOCHEMICAL CHARACTERISTICS AND GENESIS OF STRATABOUND GOLD DEPOSITS IN JIANGNAN GOLD METALLOGENIC BELT

This paper, based on the geochemical study and comparison of the gold-bearing formations and stratabound gold deposits hosted by the formations in the belt, shows that the most outstanding geochemical characteristics of the strata-bound gold deposits in the Proterozoic Jiangnan Metallogenic Belt, namely "Jiangnan-type" gold deposits, are conjugated occurrence of gold-depleted strata associated with high frequency gold mineralization in regional scale and negative gold anomaly in the wall rock of gold orebodies in the local range, concentration of the low-abundance elements such as Au, Sb, W and As, and impoverishment of base metals in the ore. Their ore-forming solutions have a temperature range of 160—390℃, intermediate salinity mostly from 4 to 10 wt% NaC1 equiv., nearly neutral to weak alkaline, and are reduced, rich in HCO_3~-, ΣS and poor in C1. It is suggested that the ore-forming elements of the deposits mostly come from the gold-bearing formations and the metallogenic processes are majorly re