Identification and determination of inorganic anions in real extracts from pre- and post-blast residues by capillary electrophoresis.
Summary of "Identification and determination of inorganic anions in real extracts from pre- and post-blast residues by capillary electrophoresis."
Fast, selective, and sensitive analysis of inorganic anions is compulsory for the identification of explosives in post-blast or environmental samples. For the last twenty years, capillary electrophoresis (CE) has become a valuable alternative to ion chromatography (IC) for the analysis of inorganic-based explosives because of its low running costs and its simplicity of use. This article focuses on the development and validation of a CE method for the simultaneous analysis of 10 anions (chloride, nitrite, nitrate, thiosulphate, perchlorate, chlorate, thiocyanate, carbonate, sulphate, and phosphate) which can be found in post-blast residues, plus for the first time azide anion, possibly present in the composition of detonators, and the internal standard (formate) in 20 min total runtime. Intermediate precisions were 2.11% for normalized areas and 0.72% for normalized migration times. Limits of detection close to 0.5 ppm for all anions were obtained with the use of preconcentration techniques, thanks to a fast and simple sample preparation allowing the analysis of a large variety of matrices with the developed generic CE method. The matrix effects were statistically studied for the first time in the explosive field for different matrices, containing interfering anions and cations, sometimes at high levels. In fact, no significant matrix effect occurred (tests with blank matrix extracts of soil, cloth, glass, plastic, paper, cotton, and metal). Finally, analyses of real post-blast residues and real detonator extracts were performed. The CE results were compared with those obtained with the IC method used routinely and showed excellent correlation.
Laboratoire Central de la Préfecture de Police, 39 bis rue de Dantzig, 75015 Paris, France.
This article was published in the following journal.
Name: Journal of chromatography. A
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/20850753
- DOI: http://dx.doi.org/10.1016/j.chroma.2010.08.002
Inclusion complex formation of benzoic acid with α-, β- and γ-cyclodextrins in water and in 0.2M solutions of inorganic salts (KCl, KBr, KH2PO4 and K2SO4) has been studied by means of (1)H NMR at 2...
The structures, vibrational frequencies, and thermodynamic stabilities of the homonuclear polyhalogen ions, X3(+), X3(-), X4(+), X4(-), X5(+), and X5(-) (X = Cl, Br, I), have been calculated at the CC...
Manure-straw mixtures were composted and water extracts, made by incubating compost in water for 3 to 18 days, were assessed for antagonistic activity against Botrytis cinerea, using a range of tests....
Species of the genus Psychotria are used for multiple purposes in Brazilian folk medicine, either as water infusions, baths or poultices. This study was aimed to evaluate the genotoxic and antiprolife...
Analysis of raw materials and final products need reliable methods for the standardization of natural product drugs. Legal guideline also emphasizes on the qualitative and quantitative analyses of the...
The purpose of this study is to clarify the effects of tea catechin extracts on the frequency changes of micronuclei in peripheral lymphocytes compared with other oxidative stress markers ...
The purpose of this study is to test and compare the allergenic effects of three commercially available German cockroach allergen extracts in adults. Study hypothesis: The biological pote...
This study intends to optimize a fluorouracil/irinotecan chemotherapy regimen by the identification of individual thymidylate synthase (TS) and UDP-glucuronosyltransferase 1 (UGT1A1) polym...
Evaluation of the novel deep TMS H-Coil designs as a treatment measure in post traumatic stress disorder (PTSD). Comparing real to sham treatment.
The present study is designed to: 1. investigate the safety and efficacy of Real time myocardial echocardiography (RT-MCE) in adolescents and adults ages 13-40 with congenital and ...
Medical and Biotech [MESH] Definitions
A plant genus of the family VERBENACEAE. Lippsidoquinone; TRITERPENES; SESQUITERPENES; and THYMOL have been found in this genus. Plant extracts have cytotoxic activity. It is sometimes called Mexican oregano but that confuses it with real oregano (ORIGANUM).
Scientific study of human skeletal remains with the express purpose of identification. This includes establishing individual identity, trauma analysis, facial reconstruction, photographic superimposition, determination of time interval since death, and crime-scene recovery. Forensic anthropologists do not certify cause of death but provide data to assist in determination of probable cause. This is a branch of the field of physical anthropology and qualified individuals are certified by the American Board of Forensic Anthropology. (From Am J Forensic Med Pathol 1992 Jun;13(2):146)
Syndromes which feature DYSKINESIAS as a cardinal manifestation of the disease process. Included in this category are degenerative, hereditary, post-infectious, medication-induced, post-inflammatory, and post-traumatic conditions.
Historically, the treatment of disease by the administration of animal organs or their extracts (after Brown-Sequard). At present synthetic preparations substitute for the extracts of a gland. (From Stedman, 26th ed)
Plant extracts from several species, including genera STRYCHNOS and Chondodendron, which contain TETRAHYDROISOQUINOLINES that produce PARALYSIS of skeletal muscle. These extracts are toxic and must be used with the administration of artificial respiration.