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 chromatographyNghiên cứu ảnh hưởng của phân viên nén đến năng suất và chất lượng sắn KM94 trên đất dốc huyện Văn Yên, tỉnh Yên Bái (LV thạc sĩ)Nghiên cứu thực trạng giá đất ở và một số yếu tố ảnh hưởng đến giá đất ở tại huyện Vân Đồn, tỉnh Quảng Ninh giai đoạn 20122015 (LV thạc sĩ)Nâng cao năng lực cạnh tranh sản phẩm gạo Điện Biên (LV thạc sĩ)Kinh nhật tụng chùa hoằng phápMột số kỹ thuật trích chọn đặc trưng chữ viết tay trong nhập điểm rèn luyện tự động (LV thạc sĩ)Những yếu tố ảnh hưởng đến tạo động lực làm việc của cán bộ giảng viên trường Cao đẳng Kỹ thuật và dạy nghề Hữu nghị Viêng Chăn Hà Nội (LV thạc sĩ)Lunchtime Games BookHoàn thiện hệ thống đo lường thành quả hoạt động trên cơ sở vận dụng bảng điểm cân bằng (balanced scorecard) tại công ty TNHH MTV cao su hà tĩnhNghiên cứu các nhân tố tác động đến việc thu hút đầu tư trực tiếp nước ngoài vào tỉnh long anPhân tích các nhân tố ảnh hưởng đến rủi ro thanh khoản tại các ngân hàng thương mại cổ phần việt nam đang niêm yếtBài tập thực hành tính chống thấm với GEO SEEPWTác động của điều chỉnh lợi nhuận đến thanh khoản của cổ phiếu các công ty niêm yết trên thị trường chứng khoán việt namTác động của uy tín công ty kiểm toán đến quản trị lợi nhuận (earnings management) tại các ngân hàng TMCP việt namVai trò của bộ phận kế toán quản trị và thông tin kế toán quản trị trong việc nâng cao kết quả hoạt động kinh doanh của các doanh nghiệp việt namCác giải pháp nâng cao mức độ thỏa mãn công việc của cán bộ nhân viên văn phòng hội đồng nhân dân, ủy ban nhân dân thành phố biên hòa, tỉnh đồng naiCác nhân tố ảnh hưởng tới chất lượng thông tin kế toán trên báo cáo tài chính hợp nhất của các công ty niêm yết tại thành phố hồ chí minhChiến lược phát triển kinh tế biển việt nam xét từ tiếp cận cạnh tranh quốc tếBiến đổi quan hệ dòng họ của người tày ở xã quang lang, huyện chi lăng, tỉnh lạng sơn từ năm 1986 đến nayCơ sở địa lý cho quản lý và bảo vệ môi trường huyện vân đồn, tỉnh quảng ninhĐánh giá mức độ tổn thương ngành du lịch do tác động của biến đổi khí hậu tại tỉnh nghệ an
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