Multielement-preconcentration for atomic spectroscopy by sorption of dithiocarbamate-metal complexes (e.g., HMDC) on cellulose collectors

Burba, P.; Willmer, P. G.

doi:10.1007/bf00488203

Cited by 30 publications

(8 citation statements)

References 27 publications

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“…These include the liquid and solid phase extraction (SPE), ion-exchanger and co-precipitation by metal hydroxides [1][2]. Liquid-liquid extraction (LLE) of different metal ions was widely employed in chemistry and industry for several years [3].…”

Section: Introductionmentioning

confidence: 99%

RETRACTED: The facile flow-injection spectrophotometric detection of gold(III) in water and pharmaceutical samples using 3,5-dimethoxy-4-hydroxy-2-aminoacetophenone isonicotinoyl hydrazone (3,5-DMHAAINH)

Babu

Kanchi

Kumar

et al. 2005

Journal of Hazardous Materials

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Section: Introductionmentioning

confidence: 99%

RETRACTED: The facile flow-injection spectrophotometric detection of gold(III) in water and pharmaceutical samples using 3,5-dimethoxy-4-hydroxy-2-aminoacetophenone isonicotinoyl hydrazone (3,5-DMHAAINH)

Babu

Kanchi

Kumar

et al. 2005

Journal of Hazardous Materials

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“…Metal complexes separable by liquid -liquid extraction can also be concentrated on and subsequently eluted from such adsorber resins as XAD, a reverse phase (e.g., C 18 ) [103], activated charcoal [104], or cellulose [105], leading to the technique of solid-phase extraction. Numerous reports describe the concentration of analytes on ion-exchange resins [106], [118] and such chelate-forming ion exchangers as Chelex [106], [119], [120] or Hyphan [121], [122].…”

Section: Concentration and Separation Of Inorganic Trace Materialsmentioning

confidence: 99%

Sample Preparation for Trace Analysis

Begerow

Dunemann

2006

Ullmann's Encyclopedia of Industrial Chemistry

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The article contains sections titled: 1. Introduction 1.1. A Strategy Appropriate to Trace Analysis 1.2. Avoidance of Systematic Errors 1.2.1. Trace Losses and Contamination 1.2.2. Uncertainty 2. Sample Preparation and Digestion in Inorganic Analysis 2.1. Sample Treatment after the Sampling Process 2.1.1. Stabilization, Drying, and Storage 2.1.2. Homogenization and Aliquoting 2.1.3. Requirements with Respect to Materials and Chemicals 2.2. Sample‐Preparation Techniques; General Considerations 2.2.1. Special Factors Associated with Microwave‐Assisted Digestion 2.2.2. Safety Considerations 2.3. Wet Digestion Techniques 2.3.1. Wet Digestion at Atmospheric Pressure 2.3.2. Pressure Digestion 2.3.2.1. Thermally Convective Pressure Digestion 2.3.2.2. Microwave‐Assisted Pressure Digestion 2.4. “Dry” Digestion Techniques 2.4.1. Combustion in Air 2.4.2. Combustion in Oxygen 2.4.3. Cold‐Plasma Ashing 2.4.4. Fusion 2.5. Illustrative Examples 2.5.1. Sample Preparation as a Function of Analytical Method 2.5.2. Combined Use of Multiple Decomposition Techniques 2.5.3. Comparative Merits of the Various Sample‐Preparation Techniques 2.5.4. Decomposition Procedures for Determining Nonmetals 2.6. Evaluation Criteria 2.6.1. Completeness 2.6.2. Uncertainty 2.6.3. Time Factors 2.6.4. The Final Result 2.7. Concentration and Separation of Inorganic Trace Materials 2.8. Automation and Direct Analysis 2.8.1. Automation 2.8.2. Direct Analysis 2.9. Analysis of Element Species 3. Sample Preparation in Organic Analysis 3.1. Sample Treatment after the Sampling Process 3.1.1. Stabilization, Drying, and Storage 3.1.2. Homogenization and Aliquoting 3.1.3. Requirements with Respect to Materials and Chemicals 3.2. Separation of the Analyte 3.2.1. Hydrolysis 3.2.2. Liquid ‐ Liquid Extraction 3.2.3. Soxhlet Extraction 3.2.4. Microwave‐Assisted Solvent Extraction 3.2.5. Supercritical Fluid Extraction (SFE) 3.2.6. Solid‐Phase Extraction (SPE) 3.2.7. Solid‐Phase Microextraction (SPME) 3.2.8. Stir‐Bar Adsorptive Extraction (SBSE) 3.2.9. Miscellaneous Techniques 3.3. Headspace Techniques 3.3.1. Static Headspace Technique 3.3.2. Dynamic Headspace Technique (Purge and Trap) 3.4. Determination of Trace Organic Materials in Air Samples 3.5. Analyte Concentration 3.6. Derivatization 3.7. Coupled Techniques Trace analysis is a very relevant and applications‐oriented branch of analytical chemistry. The sample preparation for trace analysis must be custom‐tailored to the problem at hand. Systematic errors can arise by contact with vessel materials, reagents, or the ambient atmosphere, as well as any change in chemical or physical state. In inorganic analysis, sample preparation has to meet the requirements for a substantially trouble‐free determination of the analyte. Digestion of the matrix (microwave digestion, wet digestion, dry digestion techniques) and subsequent careful comparison of several decomposition techniques is therefore an essentially important step. Some separation and concentration techniques of the analytes are liquid –liquid extraction, solid‐phase extraction, special precipitation reactions, and electrolytic deposition. The introduction of laboratory robots should make it possible to incorporate a significant degree of automation into the time‐consuming, labor‐intensive area of sample preparation as well, leading to more efficient, reliable, and reproducible sample work‐up. The goal of sample preparation in organic trace analysis is to isolate the analyte from the sample matrix (e.g., liquid‐liquid extraction, Soxhlet extraction, microwave‐assisted solvent extraction, steam distillation) and then concentrate it and convert it into a form suitable for analysis by the selected method. Separation and concentration of an analyte must often be followed by some type of derivatization. Various coupled sample preparation and determination processes are increasingly utilized in trace organic analysis.

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“…Water samples from organic-rich sources were digested by an oxidizing UV photolysis in the presence of 1% H 2 O 2 using a lowpressure Hg-lamp which was integrated into a closed quartz vessel [23]. The main conditions have been included in the abstract.…”

Section: Determination Of Metal Ions In Natural Watersmentioning

confidence: 99%

Study on soluble heavy metals with preconcentration by using a new modified oligosilsesquioxane sorbent

Vieira

Soares

Filho

et al. 2012

Journal of Hazardous Materials

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Multielement-preconcentration for atomic spectroscopy by sorption of dithiocarbamate-metal complexes (e.g., HMDC) on cellulose collectors

Cited by 30 publications

References 27 publications

RETRACTED: The facile flow-injection spectrophotometric detection of gold(III) in water and pharmaceutical samples using 3,5-dimethoxy-4-hydroxy-2-aminoacetophenone isonicotinoyl hydrazone (3,5-DMHAAINH)

RETRACTED: The facile flow-injection spectrophotometric detection of gold(III) in water and pharmaceutical samples using 3,5-dimethoxy-4-hydroxy-2-aminoacetophenone isonicotinoyl hydrazone (3,5-DMHAAINH)

Sample Preparation for Trace Analysis

Study on soluble heavy metals with preconcentration by using a new modified oligosilsesquioxane sorbent

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