Author
Mordechai (Max) Bobtelsky
Bio: Mordechai (Max) Bobtelsky is an academic researcher from Hebrew University of Jerusalem. The author has contributed to research in topics: Titration & Palladium. The author has an hindex of 18, co-authored 52 publications receiving 706 citations.
Papers
More filters
••
TL;DR: In this article, a linear relation between the quantity of material and the light absorption is not generally observed in heterometry, and no protective colloids are used in Heterometry.
33 citations
••
TL;DR: In this paper, a method for the heterometric (photometric) titration (in alcoholic solution) of calcium salts with neutral potassium phthalate was presented for determining 10 mg of Ca in a tenfold excess of magnesium.
28 citations
••
TL;DR: In this paper, the reaction between cobaltous or cobaltic and α-nitroso-β-naphthol was extensively studied heterometrically both in water and in alcoholic solutions.
27 citations
••
TL;DR: In this paper, a new heterometric method was presented for the micro-determination of lead with alkal (citrate) citrate and for micro-determining citric acid with lead nitrate.
27 citations
••
TL;DR: In this paper, a method for the micro determination of nickel with dimethylglyoxime was presented, where the error lies between zero and 0.4 mg per ml. But the time required for a titration at room temperature is 5-10 minuten.
27 citations
Cited by
More filters
••
TL;DR: The properties of metal-dithiocarbamate complexes are presented as a function of the nature of the substituents in the ligand molecule.
274 citations
••
09 Mar 2007151 citations
••
TL;DR: In this paper, the authors reviewed the recent development in sample preparation methods for the pesticide residue analysis in foods since 2006, including liquid-liquid extraction (LLE), supercritical-fluid extraction (SFE), pressurized liquid extraction (PLE), microwave-assisted extraction (MAE), ultrasound assisted extraction (UAE), gel permeation chromatography (GPC), solid phase extraction (SPE), molecularly imprinted polymers (MIPs), matrix solid-phase dispersion (MSPD), solidphase micro-extraction (SPME), QuE
Abstract: The pesticide residues in foods have received increasing attention as one of the most important food safety issues. Therefore, more strict regulations on the maximum residue limits (MRLs) for pesticides in foods have been established in many countries and health organizations, based on the sensitive and reliable analysis methods of pesticide residues. However, the analysis of pesticide residues is a continuing challenge mainly because of the small quantities of analytes as well as the large amounts of interfering substances which can be co-extracted with them, often leading to experimental errors and damage to the analytical instruments. Thus, extensive sample preparation is often required for the pesticide residue analysis for the effective extraction of the analytes and removal of the interferences. This paper focuses on reviewing the recent development in the sample preparation methods for the pesticide residue analysis in foods since 2006. The methods include: liquid-liquid extraction (LLE), supercritical-fluid extraction (SFE), pressurized-liquid extraction (PLE), microwave-assisted extraction (MAE), ultrasound-assisted extraction (UAE), gel permeation chromatography (GPC), solid-phase extraction (SPE), molecularly imprinted polymers (MIPs), matrix solid-phase dispersion (MSPD), solid-phase micro-extraction (SPME), QuEChERS, cloud point extraction (CPE) and liquid phase micro-extraction (LPME), etc. Particularly their advantages, disadvantages and future perspectives will be discussed.
96 citations
••
TL;DR: The hybrid adsorbent of nanoscale zirconium molybdate embedded in a macroporous anion exchange resin (ZMAE) is proposed for the selective removal of phosphate and shows superior selective performance in the presence of sulfate ions.
89 citations
••
TL;DR: Monitoring the environmental behaviour of target organic contaminants in an aquatic system shortly after their release into the river allowed a first evaluation of the impact of the petrogenic emission in terms of the quantity and spatial distribution.
83 citations