This review covers advances in the analysis of air, water, plants, soils and geological materials by a range atomic spectrometric techniques including emission, absorption, fluorescence mass spectrometry.

It is rarely the case that an analyst is presented with a sample in a suitable form for injection into an LC/MS system. Often the sample must be manipulated to concentrate the compound of interest, remove interferences, enzymatically digest the sample to generate surrogate peptides with better mass spectrometric properties, and modify the sample matrix or buffering system to achieve compatibili...

The present review represents a concise and complete survey of the literature covering 2004-2009, concerning the mass spectrometric techniques involved in the structural investigation of renal calculi. After a short presentation of the fundamental mass spectrometric techniques (MALDI-TOF, QTOF, MS-MS) as well as hyphenated methods (GC-MS, LC-MS, CE-MS), an extensive study of the urinary proteom...

We present a new approach that allows the identi¢cation of intron-split peptides from mass spectrometric data in genomic databases. Our algorithm uses small regions of peptide sequence information which are automatically deduced from de novo amino acid sequence predictions together with the molecular mass information of the precursor ion. The sequence predictions are based on selected collision...

The combination of high accuracy, sensitivity and speed of single and multiple-stage mass spectrometric analyses enables the collection of comprehensive sets of data containing detailed information about complex biological samples. To achieve these properties, we combined two high-performance matrix-assisted laser desorption ionization mass analyzers in one modular mass spectrometric tool, and ...

Recent advances in structural tests for regression on functional variable are used to construct test of no effect. Various bootstrap procedures are considered and compared in a simulation study. These tests are finally applied on real world datasets dealing with spectrometric studies using the information collected during this simulation study. The results obtained for the Tecator dataset are r...

A sodium pump inhibitor has been isolated from human plasma and extensively purified. This material, endogenous digitalislike factor, was examined by a variety of mass spectrometric techniques. A low-resolution fast atom bombardment mass spectrometric analysis of a sample of purified endogenous digitalislike factor revealed a single unique molecular ion in the mass range 100-2,500. The accurate...

An enzymatic hydrolysis isotope dilution-mass spectrometric method was developed for reference quantification of specific proteins. The analytical procedure involved measuring a reproducibly hydrolyzed peptide (serving as the primary standard) unique to a specific protein. This new mass spectrometric method was evaluated by assessing the concentration of apolipoprotein (apo) A-I in the European...

Rosa damascena Mill. a rather popular variety of roses has anti-inflammatory, wound-healing, and antiseptic effects. The aim this study was to establish the component composition freon extract Damask rose grown in vitro substantiate advantages method prospects for use phytosubstances medical practice. Materials methods. object rose, by clonal micropropagation vitro. qualitative quantitative det...