A new flow injection on-line adsorption preconcentration system adapted to flame atomic absorption spectrometry (FAAS) for copper determination at the g l level was developed. Polytetrafluoroethylene (PTFE) turnings packed in a mini-column were used as sorbent material. The copper ammonium pyrrolidine dithiocarbamate (APDC) complex was sorbed on the PTFE turnings, from which it could be eluted ...

In recent years, the construction industry has struggled with a variety of issues such as material availability, supply channel management, and increasing cost materials. These have encouraged search for replacements substitutes existing Blast Furnace Slag is used in mineral amendment or aggregate. Their use Earth Construction, due to their post-industrial origin, may be associated increased le...

A simple method was developed to speciate inorganic Se in the mg L range using coupled ion chromatography-hydride generation atomic absorption spectrometry. Because of the differences in toxicity and adsorption behavior, determination of the redox states selenite, Se(IV), and selenate, Se(VI), is important. We used anion exchange chromatography to separate Se(IV) and Se(VI) based on differences...

Electrothermal atomic absorption spectrometry has five major advantages for measurements of trace metals in biological materials, in comparison to measure­ ments by conventional flame atomic absorption analysis: (1) Trace metal contami­ nation is minimized by avoidance of preliminary chemical extractions and addi­ tions of reagents; (2) Sample volumes are small (1 to 50 /*1). The entire sample ...

Larrea tridentata (creosote bush), a common North American native desert shrub, exhibits the ability to take up copper(II) ions rapidly from solution. Following hydroponic studies, U.S. Environmental Protection Agency method 200.3 was used to digest the plant samples, and flame atomic absorption spectroscopy (FAAS) was used to determine the amount of copper taken up in different parts of the pl...

A rapid, simple and sensitive magnetic solid phase extraction (MSPE) method was developed for the pre-concentration and determination of copper and cadmium ions. In this study, modified Fe3O4@Ag nanoparticles were synthesized and then ligand 2-isonicotinoyl hydrazine carbodithiolate (ITHCDT) was bonded to silver due to the formation of covalent bond of S-Ag. In this method, copper and cadmium i...

This article describes the concept of controlling and correcting interference resulting from flame instability and sample reduction in absorption atomic spectrometry with flame atomization. Using popular laboratory spectrometers, which enable simultaneous or fast sequential measurements of many elements in the course of a single analysis, methods of controlling and correcting problems with inst...

This paper presents a case of poisoning of a male whose death occurred about 3 hours after onset of pain in his abdomen. The autopsy revealed semi-liquid contents in the stomach “with a distinct odour of carbide”. Post-mortem material together with a public prosecutor’s decision (request) for an expert opinion on the presence of carbide (calcium carbide, CaC2) or any other poisons in the stomac...