current practice of gas chromatography mass spectrometry

Determination of EDTA in Water Samples by SPE-Gas Chromatography/Mass Spectrometry

Determination of EDTA in Water Samples by SPE-Gas Chromatography/Mass Spectrometry
... concentration of EDTA (443 μg/L) was observed in a Table - Table – Recovery of EDTA fromtap water samples and tap water Recovery of EDTA from Milli-Q water and Milli-Q water Recovery of triplicate samples ... an EDTA analytical method to the Japanese Standard Methods for the Examination of Water Occurrence of EDTA in river water samples from three regions of Japan was examined EDTA was detected in ... shown in Fig 2, EDTA was detected in ten of thirteen river water samples Although EDTA was not detected from river water samples of Kagami, Yoshino, and Kamo rivers (concentration: < 0.1 μg/L), EDTA...
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DETERMINATION OF ORGANIC COMPOUNDS IN DRINKING WATER BY LIQUID-SOLID EXTRACTION AND CAPILLARY COLUMN GAS CHROMATOGRAPHY/MASS SPECTROMETRY pdf

DETERMINATION OF ORGANIC COMPOUNDS IN DRINKING WATER BY LIQUID-SOLID EXTRACTION AND CAPILLARY COLUMN GAS CHROMATOGRAPHY/MASS SPECTROMETRY pdf
... METHOD 525.2 DETERMINATION OF ORGANIC COMPOUNDS IN DRINKING WATER BY LIQUID-SOLID EXTRACTION AND CAPILLARY COLUMN GAS CHROMATOGRAPHY/MASS SPECTROMETRY 1.0 SCOPE AND APPLICATION 1.1 This ... procedures for determination of organic compounds in finished drinking water, source water, or drinking water in any treatment stage The method is applicable to a wide range of organic compounds that ... portion of the sample into the solvent reservoir The water sample will drain into the cartridge, and from the exit into the suction flask Maintain the packing material in the cartridge immersed in water...
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Determination of endocrine disrupting compounds in environmental samples using microextraction combined with gas chromatography mass spectrometry

Determination of endocrine disrupting compounds in environmental samples using microextraction combined with gas chromatography mass spectrometry
... DETERMINATION OF ENDOCRINE DISRUPTING COMPOUNDS IN ENVIRONMENTAL SAMPLES USING MICROEXTRACTION COMBINED WITH CHROMATOGRAPHY/ MASS SPECTROMETRY CHANBASHA BASHEER ... Balasubramanian, H K Lee Determination of organic micropollutants in rainwater using hollow fiber membrane/liquid-phase microextraction combined with gas chromatography mass spectrometry, J CHROMATOGR ... GENERAL DISRUPTING INTRODUCTION CHEMICALS MICROANALYTICAL TECHNIQUES TO AND 1.1 General introduction to endocrine disrupting compounds The issue of endocrine disrupting compounds (EDCs) in the environment...
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Gas Chromatography Mass Spectrometry doc

Gas Chromatography Mass Spectrometry doc
... ghi.Các tín hiệu xử lý chuyển sang phận in lưu kết Process Flow Schematic Sample injection Carrier gas (nitrogen or helium) Long Column (30 m) Detector (flame ionization detector or FID) Air Hydrogen ... tìm kết tương ứng) Hoặc sở để đăng ký chất (nếu phép so sánh không tìm kết tương ứng) Hình 2: Mass- spectrum    Trong hình 2, hình ảnh khối cao dodecane Phần nềm GC/MS giống thư viện hình...
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Gas Chromatography-Mass Spectrometry

Gas Chromatography-Mass Spectrometry
... ghi.Các tín hiệu xử lý chuyển sang phận in lưu kết Process Flow Schematic Sample injection Carrier gas (nitrogen or helium) Long Column (30 m) Detector (flame ionization detector or FID) Air Hydrogen...
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Investigation and application of liquid chromatography mass spectrometry in the analysis of polar, less volatile and thermal unstable organic pollutants in environmental and biological samples 6

Investigation and application of liquid chromatography mass spectrometry in the analysis of polar, less volatile and thermal unstable organic pollutants in environmental and biological samples 6
... study the degradation behavior in ultrapure water, drinking water, rain water, river water and seawater under various pH and irradiation sources (sunlight, darkness, indoor incandescent lighting and ... propham (66 %), which probably underwent thermal degradation under the extraction conditions The results indicate that although carbamates tested in this study are thermally labile, there was ... SFE Liquid chromatography- atmospheric pressure ionization- ion trap mass spectrometry was used to investigate the chemical degradation behavior of N-methylcarbamate in environmental water samples...
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Investigation and application of liquid chromatography mass spectrometry in the analysis of polar, less volatile and thermal unstable organic pollutants in environmental and biological samples 5

Investigation and application of liquid chromatography mass spectrometry in the analysis of polar, less volatile and thermal unstable organic pollutants in environmental and biological samples 5
... freedom for the assignment of the variables under consideration The assignment of the main variables (A, B, C and D), two-variable interaction, and the level setting values of the main variables ... optimization of the MAE conditions To apply these techniques in practical applications, in this chapter I 138 demonstrated the application of these techniques in analysis of the residues of Nmethylcarbamate ... the average recovery (AR) results that the combination of A1 and B2 would result in a maximum response Since effects of duration time and volume of the solvents (factors C and D) are minor, less...
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Investigation and application of liquid chromatography mass spectrometry in the analysis of polar, less volatile and thermal unstable organic pollutants in environmental and biological samples 4

Investigation and application of liquid chromatography mass spectrometry in the analysis of polar, less volatile and thermal unstable organic pollutants in environmental and biological samples 4
... 88 An interesting result observed from Fig 4- 6 is that in the same solvent, the recovery increases in going from PAHs to PCBs, and then to triazines (i.e, increasing polarity of analyte) The recovery ... 88.1±3.7 89.8±3.2 91 .4 3.0 93.5 4. 5 41 .0±3.8 18 .4 4. 0 10 80.0±3.6 84. 2 4. 5 89.2±5.0 90.2 4. 0 93.2±2.9 94. 6±3.7 36.8±2.8 15.2±2 .4 15 79 .4 5.0 84. 6±3.6 86.6±3.6 87.9 4. 7 94. 5 4. 5 96.2 4. 2 30.6±3.8 12.1±3.0 ... Hexane-acetone (1 :4) 47 .5 4. 2 48 .6 4. 3 48 .3 4. 0 46 .4 4. 5 49 .2 4. 4 Hexane-acetone (1:1) 36.2±3.0 35.9±2.9 41 .0±3.8 37.2±3.1 40 .1 4. 2 Dichloromethane 24. 2±2.9 23.6±3.0 26.0±2.8 24. 9 4. 6 26.6±5.5 a Soil-1,...
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Investigation and application of liquid chromatography mass spectrometry in the analysis of polar, less volatile and thermal unstable organic pollutants in environmental and biological samples 3

Investigation and application of liquid chromatography mass spectrometry in the analysis of polar, less volatile and thermal unstable organic pollutants in environmental and biological samples 3
... 160.9 31 8.2 250.6 53. 3 3. 07 2.1 1. 43 60 52 45 * at pH 10.5, units of k and t1/2 are s-1 and s, respectively a incandescent lighting 64 3. 3 .3 Degradation of Propoxur in Natural Water In order to provide ... light intensity affects the K and in each natural water sample K increases and t½ decreases accordingly when the light intensity increases in the order of darkness, indoor lighting and sunlight ... application of LC-APCI-MS for the determination of carbamates: carbofuran and 3hydroxy-carbofuran, and the analysis of triazine herbicides in water [8] LC-ESI-MS has...
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Investigation and application of liquid chromatography mass spectrometry in the analysis of polar, less volatile and thermal unstable organic pollutants in environmental and biological samples 2

Investigation and application of liquid chromatography mass spectrometry in the analysis of polar, less volatile and thermal unstable organic pollutants in environmental and biological samples 2
... levels of the target analysts in soil samples before spiking 2. 3 .2. 2 Freshly spiked soils Freshly spiked soil samples were prepared by adding an appropriate volume of spiking solutions into the ... possible traces of PAHs, PCBs, triazines, carbamates and other organic contaminants, 100 g of each of the soil sample was immersed in 20 0 ml 46 each of methanol, acetone, dichloromethane and n-hexane ... purchased in a local market In order to remove possible trace organic contaminants prior to preparation, all of them were washed in fresh running water and then rinsed with deionized water The fish samples...
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Investigation and application of liquid chromatography mass spectrometry in the analysis of polar, less volatile and thermal unstable organic pollutants in environmental and biological samples 1

Investigation and application of liquid chromatography mass spectrometry in the analysis of polar, less volatile and thermal unstable organic pollutants in environmental and biological samples 1
... From Table 1- 5, it can be seen that various classes of pesticides have been determined by employing either LC-ESI-MS [11 1 -11 7, 12 1, 12 3] or LC-APCI-MS [11 8, 11 9, 12 2] The combination of SPE with ... ESI–PI–MS 5 10 11 6 GW off-line, 1L, SPE, ESI–NI–MS 5 10 11 5 SW off-line, 0.2L, SPE, ESI–PI–MS 20–30 11 7 Imidazolinone DW off-line, 2L, SPE, ESI–PI–MS about 11 3 Phenoxy acid GW off-line, 1L, SPE, ... 1L, SPE, ESI–NI–MS 10 –20 11 6 SW off-line, 1L, SPE, ESI–PI–MS 1 20 11 1 SW off-line, 0.2L, SPE, ESI–PI–MS 13 –40 11 2 Sulfonylurea GW off-line, 2L, SPE, ESI–NI–MS 5 10 11 4 Triazine, Phenylurea GW...
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Analysis of keto enol tautomers of curcumin by liquid chromatography mass spectrometry

Analysis of keto enol tautomers of curcumin by liquid chromatography mass spectrometry
... number of exchangeable hydrogens of the enol form and the keto form are different Two phenolic hydrogens of keto form, and two phenolic hydrogens and one aliphatic hydroxyl hydrogen of enol form ... work was supported by the Research Fund for the Doctoral Program of Higher Education (No 20110002110052) References Fig Fragmentation of curcumin in keto form and enol form by negative MS/MS because ... peak represents an impurity of curcumin with a different structure or another form of curcumin, after fractionation of peak 2, a portion of the fraction was subjected to analysis again The chromatogram...
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Báo cáo khoa học: "Simultaneous Determination of Various Macrolides by Liquid Chromatography/Mass Spectrometry" pps

Báo cáo khoa học:
... corresponding with Simultaneous Determination of Various Macrolides by Liquid Chromatography/Mass Spectrometry 105 F i g T ot a l ion ch r om a t ogr a p h y (TI C, A) of m a cr olid e a n d t ia ... the simultaneous determination of macrolides The fragmentation patterns provide the confirmatory information of macrolides The relevance of these studies for the determination of macrolide in ... time for the determination of macrolides LC/ MS which omits the derivatization procedures was successfully applied to determine several macrolides Simultaneous determination methods by HPLC with...
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Từ khóa: determining aromatic hydrocarbons and chlorinated hydrocarbons in sediments and tissues using accelerated solvent extraction and gas chromatography mass spectrometryapplication of gas chromatography in petroleum industrysắc ký khí ghép khối phổ gc ms gas chromatography mass spectometrytolley s basic science and practice of gas servicechromatography mass spectrometry ht gc ms to the detection of pesticides in ricetìm hiểu về sắc ký khí ghép khối phổ gc ms gas chromatography mass spectometrychromatography mass spectrometry for progesterone measurementchromatography mass spectrometry gc ms analysischoice of stationary phase in gas chromatography—value of the resource additions and depletion of gas current rent method i rate of return—value of the resource additions and depletion of gas current rent method ii value of capitallimitations sources of error when using passive sampling thermal desorption gas chromatographya procedures framework and an exploration of current practicechromatography and mass spectrometry of complex enzyme digeststhe use of solvation models in gas chromatographyKHẢO SÁT, ĐÁNH GIÁ QUY TRÌNH QUẢN LÝ CHẤT LƯỢNG PHẦN MỀM DỰA THEO ĐỘ ĐO VÀ ĐỀ XUẤT PHƯƠNG ÁN TỐI ƯU CHO CÁC CÔNG TY GIA CÔNG PHẦN MỀMWord of mouth and interpersonal communicationMột số phương pháp tối ưu trong các giai đoạn phát triển phần mềm nhúnNghiên cứu phát hiện luật kết hợp hiếm và ứng dụngNghiên cứu phát hiện mẫu chất liệu trong ảnhNGHIÊN CỨU PHƯƠNG PHÁP NÉN DỮ LIỆU ĐỂ TĂNG HIỆU QUẢ LƯU TRỮ CHUỖI DNANghiên cứu phương pháp quản lý chuyển vùng trong mạng 4GNGHIÊN CỨU XÂY DỰNG HỆ THỐNG TÌM KIẾM VIDEO DỰA TRÊN NỘI DUNGNGHIÊN CỨU XÂY DỰNG ỨNG DỤNG XỬ LÝ VĂN BẢN LUẬT GIAO THÔNGPHƯƠNG PHÁP SAT ENCODING V ÙNG DÖNG TRONG MËT SÈ TRÁ CHÌI LOGIPhương pháp tối ưu đàn kiến và ứng dụngTHỰC HIỆN CƠ CHẾ CACHE ATOM HEADER CHO DỊCH VỤ TRUYỀN VIDEO TRÊN NỀN TẢNG HỆ THỐNG NHÚNGỨng dụng chuẩn mã hóa nâng cao (AES) trong giao thức đóng gói bảo mật dữ liệu (ESP)Văn hóa doanh nghiệp tại Học viện Công nghệ Bưu chính Viễn thôngVăn hóa doanh nghiệp tại VNPT Bắc GiangXÂY DỰNG CÔNG CỤ KIỂM THỬ TỰ ĐỘNG CHO CÁC CHƯƠNG TRÌNH CXử lý trùng lặp, phân loại, xác định từ khóa quan trọng và sinh tóm tắt cho văn bản trong một hệ thống thu thập tin tức tự độngMở rộng hoạt động huy động vốn tiền gửi từ dân cư tại Ngân hàng nông nghiệp và Phát triển nông thôn Việt Nam - Chi nhánh tỉnh Hà NamMô tả kiến thức tự chăm sóc và bảo vệ bàn chân của bệnh nhân đái tháo đường type 2 tại Khoa nội tiết Bệnh viện Bạch Mai năm 2015Mô tả một số yếu tố liên quan đến bệnh đột quỵ trên bệnh nhân điều trị nội trú viện tim mạch bệnh viện Bạch Mai
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