Zobrazeno 1 - 10
of 27
pro vyhledávání: '"M. C. Pascual-Martí"'
Publikováno v:
Microchemical Journal. 72:221-228
A prior study of different sample pre-treatments for the determination of metallic elements in complete diet feeds was performed in order to choose the most suitable for these samples. The studied pre-treatment were: acid extraction (lixiviation), we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e64ae063d64ee4f901aaebb61d3a271
https://doi.org/10.1016/s0026-265x(02)00037-1
https://doi.org/10.1016/s0026-265x(02)00037-1
Publikováno v:
Microchemical Journal. 69:199-204
Determination of amphetamine in urine was performed by batch and flow injection methodologies. The suitable experimental conditions for fluorimetric measurements were established. The liquid–liquid extraction was carried out at pH 13 using diethyl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::316908d8c502278e6c10c32102f0264a
https://doi.org/10.1016/s0026-265x(01)00080-7
https://doi.org/10.1016/s0026-265x(01)00080-7
Publikováno v:
Talanta. 54:735-740
Supercritical fluid extraction of resveratrol from grape skin of Vitis vinifera was studied. Extraction variables such pressure, modifier concentration (ethanol), and extraction time were optimised. Final extraction conditions were: 40 degrees C, 150
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3362920b38331e5b15034ac4ea0962db
https://doi.org/10.1016/s0039-9140(01)00319-8
https://doi.org/10.1016/s0039-9140(01)00319-8
Publikováno v:
Analytica Chimica Acta. 428:183-190
A flow injection procedure was developed for the simultaneous determination of two UV filters (oxybenzone and 2-ethylhexyl 4-methoxycinnamate) in sunscreen formulations, based on the isodifferential approach. The use of the second derivative spectra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c121166b0699fe3e1cfb5526a96eedb
https://doi.org/10.1016/s0003-2670(00)01229-0
https://doi.org/10.1016/s0003-2670(00)01229-0
Publikováno v:
The Analyst. 126:1462-1465
A sequential injection (SI) procedure for the spectrophotometric determination of oxybenzone in lipsticks is reported. The colorimetric reaction between nickel and oxybenzone was used. SI parameters such as sample solution volume, reagent solution vo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::45baeea12086a8ab0b5f311d4444642e
https://doi.org/10.1039/b103497a
https://doi.org/10.1039/b103497a
Publikováno v:
Talanta. 51:1171-1177
Microwave assisted pre-treatments for atomic spectrometric determination (inductive coupled plasma-optical emission spectrometry, ICP-OES or flame atomic absorption spectrometry, FAAS) of metallic elements, usually present in antidandruff shampoos, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b242498b6361675ce2d64bf8e364b711
https://doi.org/10.1016/s0039-9140(00)00290-3
https://doi.org/10.1016/s0039-9140(00)00290-3
Publikováno v:
Fresenius' Journal of Analytical Chemistry. 357:572-576
The Intersection Point Method (IPM) is a new method for the determination of an analyte in the presence of several unknown interferences. The method is based on the Apparent Content Curves (ACC) from derivative signals. To test the proposed procedure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::660a73d997236887b1d40a9cb821c088
https://doi.org/10.1007/s002160050216
https://doi.org/10.1007/s002160050216
Publikováno v:
Analytical Letters. 29:1351-1364
Summary A mathematical method that avoids spectral interferences in creatinine determination in plasma by the Jaffe reaction is proposed. The experimental conditions are studied and the accuracy and precision of the method are tested against two refe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c9764e11014f6035ab30e3994beac130
https://doi.org/10.1080/00032719608001486
https://doi.org/10.1080/00032719608001486
Publikováno v:
Microchemical Journal. 49:36-47
The simultaneous use of the linear absorbances method and the derivative spectroscopy technique allows paracetamol to be spectrometrically determined in the presence of two interfering drugs that are generally associated with paracetamol in analgesic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57956db0dbbe18107f2b461d7bd92510
https://doi.org/10.1006/mchj.1994.1006
https://doi.org/10.1006/mchj.1994.1006
Publikováno v:
Fresenius' Journal of Analytical Chemistry. 347:305-313
The paper exposes the theoretical and experimental study performed with the purpose to extend the application of the Linear Absorbances Method to more complex systems, which present two spectral interferences. The curves of collinearity are developed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9154bcba4364de318490ffa702fae12d
https://doi.org/10.1007/bf00323812
https://doi.org/10.1007/bf00323812