handbook of practical x ray fluorescence analysis

... moss samples In this study, we focused on the analysis of elements in moss using the total reflection X- ray fluorescence (TXRF) technique, which offers even better detection limits than other ... UNIVERSITY JOURNAL OF SCIENCE [NATURAL SCIENCES AND TECHNOLOGY] 2.3 TXRF technique The characteristic X- ray spectrum for each moss sample was determined with an S2 PICOFOX™ TXRF spectrometer operated ... UNIVERSITY JOURNAL OF SCIENCE Volume 10, Issue , 2020 98-109 ANALYSIS OF TRACE ELEMENT ATMOSPHERIC DEPOSITION BY BARBULA INDICA MOSS AT BAOLOC USING THE TOTAL REFLECTION X- RAY FLUORESCENCE TECHNIQUE

Ngày tải lên: 05/11/2020, 09:11

... (2019) Proximate composition, minerals and antioxidant activity of Artichoke leaf extracts Biological Trace Element Research, 194, 589-595 Bruker AXS Microanalysis GmbH (2007) S2 Picofox Retrieved ... studied with the Total Reflection X- ray Fluorescence (TXRF) technique Twelve artichoke samples were collected, three samples for each part of the artichoke TXRF technique is commonly used in ... DALAT UNIVERSITY JOURNAL OF SCIENCE Volume 10, Issue , 2020 67-76 ANALYSIS OF TRACE ELEMENT CONCENTRATIONS IN ARTICHOKES AT DALAT USING TOTAL REFLECTION X- RAY FLUORESCENCE Nguyen Thi Minh

Ngày tải lên: 05/11/2020, 09:12

... used is of a special grade as pure as that used for analysis of the autoxidation value (AV) and peroxide value (POV) (Dojin Laboratories, Kumamoto, Japan). Other organic solvents are of the highest ...  e peak of pentobar- bital overlaps that of hexobarbital; the peak of amobarbital appears very close to these peaks ( > Figure 6.6). Toxic and fatal concentrations  erapeutic, toxic and fatal ... with a particle diameter of 2 µm in place of 5 µm; the smaller diameter gives various advantages, such as higher sensitivity, rapid analysis and a smaller amount of the  ow of mobile phase.  e

Ngày tải lên: 15/12/2013, 12:15

... phase, 100 µL of phosphoric acid solution for back-extraction of the com- pounds. An aliquot of the aqueous phase is injected into HPLC. Assessment of the method  e retention times of diphenyhydramine ... was found in the range of 0–30 ng/mL; the detection limit was reported to be 1 ng/mL. HPLC analysis of hydroxyzine in blood [9] Hydroxyzine has a similar structure to those of diphenylmethane antihistaminics, ... alkaline. To 1-mL volume of a urine specimen, a 10-µL aliquot of the IS solution, 4 mL distilled water and 5 mL of 0.5 M NaHCO 3 solution are added. iii. Either mixture of whole blood or urine

Ngày tải lên: 15/12/2013, 12:15

... analgesic- antipyretics (alminoprofen, ibuprofen, oxaprofen, ketoprofen, zaltoprofen, tiaprofenic acid, naproxen, fenoprofen calcium, pranoprofen,  urbiprofen and loxoprofen sodium) were re- ported ... [9]. 1: ibuprofen; 2: alminoprofen; 3: tiaprofenic acid; 4: fenoprofen; 5: flurbiprofen; 6: naproxen; 7: loxoprofen; 8: ketoprofen; 9: pranoprofen; 10: zaltoprofen; IS: 9-anthracenecarboxylic acid; ... derivative analgesic-antipyretics alminoprofen ibuprofen oxaprozin ketoprofen zaltoprofen tiaprofenic acid naproxen fenoprofen calcium pranoprofen flurbiprofen loxoprofen sodium 327 Developing solvents

Ngày tải lên: 15/12/2013, 12:15

... extraction solvent) is very useful for extensive screening of basic drugs [6], but the extraction e ciency of MEGX becomes 4–5 times lower. MEGX can be extracted with n-chlorobutane, ethyl acetate ... e ciency of back-extraction into 0.1 M HCl solution is very low for MEGX. Unless the repeated extrac- tions are made, the above organic solvents seem suitable for extraction of MEGX. p) Since ... storage of the solutions in dark brown bottles is possible at room temperature. b) If one of the local anaesthetics except mepivacaine is targeted for analysis, methanolic solu- tion of carbinoxamine

Ngày tải lên: 24/12/2013, 18:15

... night of the 1st day of admission, the occult blood test of urine became positive (2+); 2 vials of heptoglobin were administered, followed by direct hemoperfusion and administration of 7 mL of 0.8 ... review. Hum Exp Toxicol 13:167–170 9) Study Group of Gas Chromatography of Japanese Society of Analytical Chemistry (translation) (1999) PTV split- less injection. In:Guidebook of Sample Introduction ... those with the Extrelut about 60 %. Both recovery and reproducibility by the Extrelut extraction are superior to those by the liquid-liquid extraction. Poisoning case, and toxic and fatal concentrations

Ngày tải lên: 24/12/2013, 18:15

... A Handbook of Practical Analysis Osamu Suzuki and Kanako Watanabe Drugs and Poisons in Humans A Handbook of Practical Analysis With 236 Figures and 90 Tables 123 Prof Osamu Suzuki Assoc Prof ... TANAKA Department of Legal Medicine, Institute of Community Medicine, University of Tsukuba, Tsukuba XV XVI List of Contributors Masaru TERADA Department of Legal Medicine, School of Medicine, Toho ... should be aware of the presence of such additives Sampling of specimens on a clinical scene Larger amounts of blood are preferable to be sampled for toxin analysis; however, in view of the stress

Ngày tải lên: 22/01/2014, 00:20

... γ beam or electron beam, an X- ray characteristic of the atom is emitted.  erefore, the emitted X- ray is called “ uorescence X- ray? ??. In the X- ray  uorescence analysis, elements having molecular ... quantitation of inorganic molecule, but the cost is even higher.  e IC/ICP-MS is comparabe to the LC/MS for organic compounds. X- ray fluorescence analysis In the X- ray  uorescence analysis, ... analysis of chloroform and dichloromethane and established the details of the procedure. A er this study, we extended this line of experiments to other VOCs and got good results.  e cost of

Ngày tải lên: 22/01/2014, 00:20

... aconitine analysis h [3]. Poisoning cases, and toxic and fatal concentrations  e aconitines are neurotoxic and cardiotoxic; they exert toxic e ect by acting on the gate mechanisms of sodium-ion ... into the same cartridge. ix.  e cartridge is washed with 10 mL chloroform. x. It is further washed with 10 mL ethyl acetate. xi. A 20-mL volume of diethylamine/chloroform (1:1) is passed through ... available, because of the low sensitivity of analytical methods. Now, the authors are undertaking the analysis of AAs in body  uids of aconite-poisoned patients in every area of Japan, and thus

Ngày tải lên: 22/01/2014, 00:20

... of its spores, chemical methods for analysis of toxins of mushrooms are also important. In this section, some examples of such chemical methods are described; especially, those for toxins of ... unnamed.  e number of species of edible mushrooms in Japan is about 300; that of toxic mushrooms is said to be about 30. Various types of toxic mushrooms exist; some show high toxicity, while others ... to be a toxic mushroom very recently, its toxin is only estimated to be a kind of peptides The structure of the toxin remains to be clarified Upon analysis of mushroom toxins, the causative

Ngày tải lên: 22/01/2014, 00:20

... 288 Poisoning cases and toxic concentrations Blood TTX concentrations and fatal levels  e authors also experienced the analysis of TTX in blood and/or urine of 13 subjects in TTX poisoning. As shown ... 6.8) Schema of an HPLC system for analysis of TTX. ⊡ Figure 3.4 HPLC analysis 486 Tetrodotoxin (0.4 mL/min); mobile phase for Pump B ( ow rate): 4 M NaOH (0.4 mL/min) p ; reaction box temperature: ... 11.6 Structures of tetrodotoxin (TTX) and its analogs. ⊡ Figure 3.1 482 Tetrodotoxin GC/MS analysis TTX is soluble only in acidic alcohols; it cannot be analyzed it by GC/MS in its unchanged form. TTX should

Ngày tải lên: 22/01/2014, 00:20

... of clinical specimens for analysis of nicotine and cotinine, methods by liquid-liquid extraction [3–5], solid-phase extraction [9], headspace/solid-phase microextrac- tion (SPME) [6] and Extrelut ... Promotion, Office on Smoking and Health 15) Baselt RC, Cravey RH (1977) A compendium of therapeutic and toxic concentrations of toxicologically signifi- cant drugs in human biofluids. J Anal Toxicol ... in human specimens, because of its low sensitivity as compared with that of GC/MS, but can be applied to measurements of high levels of nicotine in specimens of experimental animals. Reagents

Ngày tải lên: 22/01/2014, 00:20

... followed by GC analysis after derivatization Solid-phase extraction For neutral aqueous specimens, solid-phase extraction can be used in place of the liquid-liquid extraction for analysis of chemical ... process of lewisite ⊡ Figure 9.6 Decomposition process of diphenylarsinic compounds (DA and DC) Analysis of chemical warfare agents in human specimens In the analysis of human specimens, the kinds of ... spectrometric analysis of a cysteine adduct as a sensitive biomarker of exposure Chem Res Toxicol 12:715–721 16) Fidder A, Noort D, De Jong AL et al (1996) Monitoring of in vitro and in vivo exposure

Ngày tải lên: 26/01/2014, 18:20

... About 2 mg of solid sodium hydrosul te is added to the above cuvette and mixed well. iv. A 10-µL volume of whole blood and 0.2 ml of 5 M NaOH solution are added to the mixture and mixed well. v. ... resulting in drastic decrease of the number of CO poisoning cases. Nevertheless, many incidents of CO poisoning are occurring due to imperfect combustion,  re, exhaust gas of automobiles and other ... specific toxins 1.1 1.1 © Springer-Verlag Berlin Heidelberg 2005 II.1.1 Carbon monoxide By Keizo Sato Introduction  e incidence of carbon monoxide ( CO) poisoning is highest among those of various

Ngày tải lên: 26/01/2014, 18:20

... kinds of qualitative and quantitative methods for analysis of cyanide in wide  elds, re ecting the great needs of its analysis.  e Japanese Industrial Standard (JIS) standard- ized a method of ... part of the roof of the outer groove (B) is opened; 0.5 mL of 10 % sulfuric acid is rapidly added to the blood specimen plus ascorbic acid, and the cell is again sealed immediately and  xed ... swirled to well mix sulfuric acid and the specimen. Schematic diagram of a cross section of the Conway microdiffusion cell. The bottom of the cell is compartmented by a circular wall of 5-mm height

Ngày tải lên: 26/01/2014, 18:20

... the construction of a calibration curve) in a set of experiments to avoid the variation of data due to a di erent lot of a  ber. k) Although the extraction e ciency (recovery) of the headspace ... for analysis of drugs and poisons in forensic toxicology. f) On the surface of an SPME  ber, a liquid phase or an adsorbent material of 7–100 µm thickness is coated. A drug or a poison is extracted ... linearity of the curve. e)  e SPME method is a new extraction technique developed by Pawliszyn et al. [15] of Waterloo University of Canada in 1990. It has been being used mainly for analysis of

Ngày tải lên: 26/01/2014, 18:20

... Prothiofos metabolites in human poisoning. J Toxicol Clin Toxicol 37:327–332 14) Seno H, Hattori H, Kumazawa T et al. (1998) Quantitation of postmortem profenofos levels. J Toxicol Clin Toxicol ... Autopsy  ndings were mio- sis, erosion of the pharynx, larynx and esophagus, and 87 mL of dark brownish  uid in the stomach.  e concentrations profenofos in blood, urine and gastric contents ... pH of the mixture is adjusted to 2 with 1 M HCl solution. ii. A er adding 2 mL chloroform, the tube is vortex-mixed for 2 min and centrifuged at 3,000 rpm for 5 min to separate the chloroform

Ngày tải lên: 26/01/2014, 18:20

... of ethyl acetate is added to the mixture and shaken to remove excessive FMOC-Cl. A 100-µL aliquot of the aqueous layer is mixed with 400 µL of 0.1 M borate bu er solution (pH 8.5); 10 µL of ... Nakashima K, Higashi H et al (1999) Analysis of toxicokinetics of glufosinate (GLF) in a case of poisoning by oral intake of BASTA Fluid® Jpn J Toxicol 12:468 (in Japanese) 21) Hori ... 50-µL volume of the above solution is mixed with 200 µL of 0.1 M borate bu er solution (pH 8.5) and 200 µL of 0.1 % FMOC-Cl acetone solution, capped and mixed well g .  e mixture is incubated

Ngày tải lên: 26/01/2014, 18:20

... i) step of extraction is repeated two times. iii.  e three acetonitrile supernatant solutions thus obtained are combined and mixed with 80 mL of 2 % NaCl solution and 25 mL of n-hexane/ethyl ... sulfone, oxamyl, methomyl, 3-hydroxycarbofuran, 569 570 Carbamate pesticides aldicarb, propoxur, carbofuran, carbaryl and methiocarb can be analyzed at ppb levels simultaneously t) Carbofuran ... Institute of Police Science of Japan, the number of fatalities is highest with paraquat plus diquat, followed by organophosphates and then carba- mates among pesticides.  e toxicity of carbamate

Ngày tải lên: 26/01/2014, 18:20