標(biāo)題: Titlebook: Complexation of trace metals in natural waters; Proceedings of the I C. J. M. Kramer,J. C. Duinker Conference proceedings 1984 Springer Sci [打印本頁(yè)] 作者: Wilder 時(shí)間: 2025-3-21 19:23
書目名稱Complexation of trace metals in natural waters影響因子(影響力)
書目名稱Complexation of trace metals in natural waters影響因子(影響力)學(xué)科排名
書目名稱Complexation of trace metals in natural waters網(wǎng)絡(luò)公開度
書目名稱Complexation of trace metals in natural waters網(wǎng)絡(luò)公開度學(xué)科排名
書目名稱Complexation of trace metals in natural waters被引頻次
書目名稱Complexation of trace metals in natural waters被引頻次學(xué)科排名
書目名稱Complexation of trace metals in natural waters年度引用
書目名稱Complexation of trace metals in natural waters年度引用學(xué)科排名
書目名稱Complexation of trace metals in natural waters讀者反饋
書目名稱Complexation of trace metals in natural waters讀者反饋學(xué)科排名
作者: Prostaglandins 時(shí)間: 2025-3-22 00:17
978-94-009-6169-2Springer Science+Business Media Dordrecht 1984作者: AGATE 時(shí)間: 2025-3-22 01:59
State and Market in Higher Education Reformstal speciation is required when assessing biological impact because bioavailability and toxicity seem to be directly related to the concentration of the metal ion species only (Sunda and Guillard, 1976; Anderson and Morel, 1978; van den Berg, 1979; Allen et al., 1980).作者: Needlework 時(shí)間: 2025-3-22 07:14 作者: defile 時(shí)間: 2025-3-22 08:50 作者: Kindle 時(shí)間: 2025-3-22 14:47
,State–Religious Relationships in Ethiopia,en Dooren, 1965, Neilands, 1967) we have come a long way towards the development of sensitive chemical techniques which provide a measure of the organic and inorganic metal fractions in natural waters. A number of these techniques have been collected in Table 1. Most techniques are based on the phys作者: Kindle 時(shí)間: 2025-3-22 20:47 作者: anagen 時(shí)間: 2025-3-22 22:38 作者: Aura231 時(shí)間: 2025-3-23 03:50
Public Administration, State and Societyl availability. Inorganic ligands of importance in determining trace metal speciation are relatively few in number and their concentrations are readily determined. In contrast, a diverse spectrum of organic compounds of potential complexing ability is known to exist in natural waters, for example: a作者: Iniquitous 時(shí)間: 2025-3-23 07:31
Public Administration, State and Societydifficulties. The first obstacle lies in obtaining reliable data for metal complexation with organic matter over a useful range of metal levels, and the other lies in reporting the results in a simple and accurate fashion. This paper addresses both of these aspects, first by demonstrating the reliab作者: 慢慢沖刷 時(shí)間: 2025-3-23 11:07
Public Administration, State and Societystrongly on the chemical forms (species) in which the dissolved metals exist in the respective natural water type (Stumm and Morgan, 1981). The resulting tendencies and potentialities of a heavy metal to accumulate at suspended particles has e.g. a decisive influence on the concentration regulation 作者: 陪審團(tuán) 時(shí)間: 2025-3-23 17:19
https://doi.org/10.1057/9780230590922ribution the result of which are various geochemical pathways. Electrochemical methods are very valuable for trace metal speciation. However, their application must be performed cautiously because of very specific sensitivity of the electrode reaction to the different groups of heavy metal species. 作者: 獨(dú)白 時(shí)間: 2025-3-23 19:47 作者: 軍械庫(kù) 時(shí)間: 2025-3-24 01:07
Studies in Central and Eastern Europesent in natural waters as ions or labile (mostly inorganic) complexes, nonlabile (mostly organic) complexes or chelated forms and adsorbed or incorporated in colloidal particles. They can be characterized by different degrees of hydration and oxydation states. In the natural environment all these di作者: 繁重 時(shí)間: 2025-3-24 05:41
Studies in Central and Eastern Europe since the appearance of papers in which computers were used to model the chemistry of water-mineral reactions (Helgeson, et al., 1969, 1970). The use of computers to solve chemical equilibrium problems for aqueous systems has expanded enormously and “chemical modeling” is now a common phrase descri作者: 憲法沒有 時(shí)間: 2025-3-24 07:32 作者: intrude 時(shí)間: 2025-3-24 13:03
State and Statehood in the Global Southideration of the cumulative uncertainties inherent in the process of constructing chemical models. In this note we examine the effect of uncertainties in trace metal complexation constants and pH on the predicted fraction of free metal ion. Only mononuclear inorganic complexes are included. Analytic作者: 矛盾 時(shí)間: 2025-3-24 18:08 作者: 粗鄙的人 時(shí)間: 2025-3-24 20:58
Latin America: The Refounding of the State is added to a natural water it is distributed between several physico-chemical forms, which may have quite different environmental effects (Florence & Batley 1980; Hart 1982a). For example it is now generally accepted that the free uncomplexed forms of trace metals such as copper, cadmium and zinc,作者: 來自于 時(shí)間: 2025-3-25 02:53
Measurement of Copper Complexation by Naturally Occurring Ligandstal speciation is required when assessing biological impact because bioavailability and toxicity seem to be directly related to the concentration of the metal ion species only (Sunda and Guillard, 1976; Anderson and Morel, 1978; van den Berg, 1979; Allen et al., 1980).作者: BOOR 時(shí)間: 2025-3-25 05:12
The Use of Electrochemical Techniques to Monitor Complexation Capacity Titrations in Natural Watersvity. Complexation by natural organic matter is a major feature of the speciation of certain trace metals and is widely studied by complexation capacity titrations. The theory of such titrations is well-documented (Shuman and Woodward 1973, 1977).作者: Myosin 時(shí)間: 2025-3-25 07:58 作者: 熱心助人 時(shí)間: 2025-3-25 13:23
https://doi.org/10.1057/9780230590922pparent stability constant of the formed metal complex. Because the measerement directly correspond to the formed inert metal complex many drawbacks of indirect methods, based on diminished signal of the ‘free metal’ ware, are avoided..The additional physico-chemical characterization of the formed m作者: Mendicant 時(shí)間: 2025-3-25 19:04
Studies in Central and Eastern Europew paper and an attempt is made in this paper to inventory these programs, review the shortcomings of some of the traditional methods of calculating speciation and suggest avenues for improvement in the chemical models which could be incorporated into the programs.作者: 過多 時(shí)間: 2025-3-25 21:28 作者: 切碎 時(shí)間: 2025-3-26 00:15
Direct Determination of Metal Complexationpparent stability constant of the formed metal complex. Because the measerement directly correspond to the formed inert metal complex many drawbacks of indirect methods, based on diminished signal of the ‘free metal’ ware, are avoided..The additional physico-chemical characterization of the formed m作者: anticipate 時(shí)間: 2025-3-26 04:28
Chemical Models, Computer Programs and Metal Complexation in Natural Watersw paper and an attempt is made in this paper to inventory these programs, review the shortcomings of some of the traditional methods of calculating speciation and suggest avenues for improvement in the chemical models which could be incorporated into the programs.作者: 自戀 時(shí)間: 2025-3-26 12:19
Chromatographic Separation for the Measurement of Strong and Moderately Strong Complexing Capacity iThe technique I am going to describe for measuring complexing ability is unique in that it is capable of rapidly measuring the quantities of both strong and intermediate strength ligands. As such it should be a useful tool for investigating changes in metal binding ability that accompany, preceed, or follow changes in primary productivity of lakes.作者: RENAL 時(shí)間: 2025-3-26 16:03
Determination of Ligand Concentrations and Conditional Stability Constants in Seawater. Comparison o作者: 改變立場(chǎng) 時(shí)間: 2025-3-26 19:09
Complexation Capacity and Conditional Stability Constants for Copper of Sea- and Estuarine Waters, S作者: CRAB 時(shí)間: 2025-3-26 21:46
Investigations on the Complexation of Heavy Metals with Humic Substances in Estuaries作者: Devastate 時(shí)間: 2025-3-27 03:23 作者: overture 時(shí)間: 2025-3-27 09:13 作者: Hot-Flash 時(shí)間: 2025-3-27 13:10 作者: 駁船 時(shí)間: 2025-3-27 17:27
Public Administration, State and Societyy determined. In contrast, a diverse spectrum of organic compounds of potential complexing ability is known to exist in natural waters, for example: amino acids, proteins, monosaccharides, polysaccharides, porphyrins, hydroxamic acids, fulvic acids, humic acids.作者: 講個(gè)故事逗他 時(shí)間: 2025-3-27 20:34
Studies in Central and Eastern Europeated in colloidal particles. They can be characterized by different degrees of hydration and oxydation states. In the natural environment all these different forms of trace metals can be in equilibrium or at least in a steady state (Florence and Batley, 1980; Stumm and Morgan, 1981).作者: impale 時(shí)間: 2025-3-27 23:00
State and Statehood in the Global South in trace metal complexation constants and pH on the predicted fraction of free metal ion. Only mononuclear inorganic complexes are included. Analytical uncertainties (other than in pH determinations) are not treated.作者: jaundiced 時(shí)間: 2025-3-28 03:04 作者: companion 時(shí)間: 2025-3-28 09:40
Determination of the Complexation Capacity of Natural Waters Using Metal Solubilization Techniquesy determined. In contrast, a diverse spectrum of organic compounds of potential complexing ability is known to exist in natural waters, for example: amino acids, proteins, monosaccharides, polysaccharides, porphyrins, hydroxamic acids, fulvic acids, humic acids.作者: 出生 時(shí)間: 2025-3-28 13:55 作者: 要塞 時(shí)間: 2025-3-28 15:01 作者: 外星人 時(shí)間: 2025-3-28 19:13
Measurement of the Trace Metal Complexing Capacity of Magela Creek Waters& Batley 1980; Hart 1982a). For example it is now generally accepted that the free uncomplexed forms of trace metals such as copper, cadmium and zinc, are the forms most acutely toxic to a range of aquatic animals and plants (Davies et al. 1976; Lake et al. 1979; Sunda & Ferguson 1983; Petersen 1982).作者: Estrogen 時(shí)間: 2025-3-29 00:41
Analytical Methods for Measurement and Interpretation of Metal Binding by Aquatic Humus and Model Coility of binding data for identical solutions among four distinctly different methods, and second by treating these data using a mathematical model that is based conceptually on electrostatic interactions as a cause of variable strength binding. Natural water organic matter and synthetic polymers were used to evaluate these methods.作者: absolve 時(shí)間: 2025-3-29 06:49
Public Administration, State and Societyility of binding data for identical solutions among four distinctly different methods, and second by treating these data using a mathematical model that is based conceptually on electrostatic interactions as a cause of variable strength binding. Natural water organic matter and synthetic polymers were used to evaluate these methods.作者: 閑蕩 時(shí)間: 2025-3-29 09:27 作者: jabber 時(shí)間: 2025-3-29 12:30
Studies in Central and Eastern Europeut the extent of this interference in natural waters has not as yet been comprehensively examined. Accordingly, in this paper we address ourselves to the first problem and how it relates to copper speciation measurements in estuarine waters using differential pulse ASV (DPASV).作者: Exhilarate 時(shí)間: 2025-3-29 17:16
Critical State Theory in the Global South continuous distribution of binding constants of unknown form (Gamble, et al., 1980; Shuman, et al., 1983). Data analysis methods proposed for other binding systems (Scatchard, 1949; Gordon, 1979) can also be used to analyze metal-DOM equilibria.作者: 蘑菇 時(shí)間: 2025-3-29 21:43
Latin America: The Refounding of the States reliable estimates for the minor ionic components (Whitfield, 1979; Millero and Schreiber, 1982). The failure of the equations of Pitzer is not due to deficiencies in the model, but a lack of parameters for the interactions of Mg. and Ca. ions with minor anions (OH., HCO., CO., etc.).作者: Migratory 時(shí)間: 2025-3-30 03:50
An Investigation of Metal-Organics in Seawater Using HPLC with Atomic Fluorescence Detectionile the inorganic speciation is fairly well characterized, virtually nothing is known about the chemical nature and co-ordinating strength of naturally occurring organic ligands. In this paper I discuss one approach to investigating trace metal organic complexes in seawater.作者: 廢止 時(shí)間: 2025-3-30 05:24
Anodic Stripping Voltammetry of Copper in Estuarine Mediaut the extent of this interference in natural waters has not as yet been comprehensively examined. Accordingly, in this paper we address ourselves to the first problem and how it relates to copper speciation measurements in estuarine waters using differential pulse ASV (DPASV).作者: integral 時(shí)間: 2025-3-30 11:32
Metal-Organic Binding: A Comparison of Models continuous distribution of binding constants of unknown form (Gamble, et al., 1980; Shuman, et al., 1983). Data analysis methods proposed for other binding systems (Scatchard, 1949; Gordon, 1979) can also be used to analyze metal-DOM equilibria.作者: 龍蝦 時(shí)間: 2025-3-30 13:05
The Activity of Metal Ions at High Ionic Strengthss reliable estimates for the minor ionic components (Whitfield, 1979; Millero and Schreiber, 1982). The failure of the equations of Pitzer is not due to deficiencies in the model, but a lack of parameters for the interactions of Mg. and Ca. ions with minor anions (OH., HCO., CO., etc.).作者: COKE 時(shí)間: 2025-3-30 17:24
Conference proceedings 1984tand important phenomena. The distinction and separate analysis of specific chemical species are essential for understanding cycles in the aquatic environment, involving identification and quantification of sources, transport pathways, distributions and sinks, or, in the area of interactions between作者: 未完成 時(shí)間: 2025-3-30 20:55
Public Administration, State and Societyiew, as belonging to the field of speciation studies, although in the future more detailed studies on the chemical states in which metals exist at or in the various types of suspended matter are very much needed.作者: 節(jié)省 時(shí)間: 2025-3-31 03:02 作者: Homocystinuria 時(shí)間: 2025-3-31 05:27
Measurement of Copper Complexation by Naturally Occurring Ligandstal speciation is required when assessing biological impact because bioavailability and toxicity seem to be directly related to the concentration of the metal ion species only (Sunda and Guillard, 1976; Anderson and Morel, 1978; van den Berg, 1979; Allen et al., 1980).作者: 制定法律 時(shí)間: 2025-3-31 09:56 作者: Anguish 時(shí)間: 2025-3-31 16:28 作者: GRATE 時(shí)間: 2025-3-31 21:23
An Investigation of Metal-Organics in Seawater Using HPLC with Atomic Fluorescence Detectionrelated to the free ion activity rather than the total concentration of trace metal (Sunda and Guillard, 1976; Anderson et al., 1978; Anderson and Morel, 1982). This does not necessarily imply that the free metal ion is the only form taken up by these organisms but it does mean that studies of chemi作者: rheumatology 時(shí)間: 2025-3-31 21:50 作者: invade 時(shí)間: 2025-4-1 04:54 作者: projectile 時(shí)間: 2025-4-1 07:55 作者: 玷污 時(shí)間: 2025-4-1 14:06
Direct Determination of Metal Complexationribution the result of which are various geochemical pathways. Electrochemical methods are very valuable for trace metal speciation. However, their application must be performed cautiously because of very specific sensitivity of the electrode reaction to the different groups of heavy metal species. 作者: 果仁 時(shí)間: 2025-4-1 17:09
Anodic Stripping Voltammetry of Copper in Estuarine Medias. However, there remain ambiquities in the interpretation of the results due to two fundamental uncertainties associated with the ASV assay. In the first instance, the species measured in an ASV analysis has so far been only operationally defined. There is no surety on the precise metal species bei
