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78 results on '"Duarte, Fábio Andrei"'

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18. Feasibility of ultrasound for oxidation and separation of organosulfur compounds in hydrocarbons and sulfur determination by spectrometric and chromatographic techniques

19. Determinação de espécies de arsênio por LC-ICP-MS

22. Determination of copper in beer by flame atomic absorption spectrometry after dispersive liquid-liquid microextraction

23. Evaluation of extraction, crystallization and separation conditions for salts and sediments from the pre-salt oil and subsequent chemical characterization

24. Determination of calcium in crude oil using colorimetry with digital images

25. Evaluation of MIC-DV for decomposition of fish tissue and system development for cold vapor generation in disposable vessel

26. Determination of chlorine, sulfur, cobalt, nickel and vanadium in petroleum after microwave-induced combustion in disposable vessels

27. Development of a colorimetric method for the determination of chloride in crude oil using a portable device

28. Use of pyrohydrolysis as a method of preparing samples for the determination of tungsten in silicon carbide by techniques based on inductively coupled plasma

29. Evaluation of extraction conditions for arsenic speciation in foods by LC-ICP-MS

30. Methods for identification and quantification of salin species and sediments in crude oil

31. Development of method for removal of water, salt and sediment of pre-salt crude oil employing microwave radiation

32. A graphical abstract is worth a thousand words: a critical analysis of a multi-purposeful multimodal genre

33. Development of green analytical methods using thermal infrared entalpimetry

34. Effect of La2O3 nanoparticles on Pfaffia glomerata (Spreng.) Pedersen and investigation on the distribution of elements by LA-ICP-MS

35. Development of sample preparation methods using high pressure digestion system for subsequent multielement determination in enteral nutrition solution

36. Determinação de elementos traço em carvão por amostragem de sólidos e vaporização eletrotérmica acoplada à espectrometria de massa com plasma indutivamente acoplado

37. Desenvolvimento de método de preparo de amostras baseado no efeito Maxwell-Wagner e determinação de elementos terras raras por técnicas espectrométricas

38. Development of analytical methods using thermal infrared enthalpimetry

39. Desenvolvimento de métodos de preparo de amostras de erva-mate para a posterior determinação de As, Cd e Pb por GF AAS e ICP-MS

40. Avaliação de diferentes sistemas de extração assistida por ultrassom para determinação de As, Cd, Cr, Ni e Pb em solo e sedimento

41. Developed a method for employing a reversed-phase dispersive liquid-liquid microextraction for determination of Na, K, Ca and Mg biodiesel

42. Determinação de elementos terras raras em petróleo e resíduos de destilação por USN-ICP-MS após digestão em câmara única de reação assistida por radiação micro-ondas

43. Halogens determination in honey after decomposition with hydrogen peroxide using high pressure system

44. Determination of trace elements in fluor opolymersby solid sampling high-resolution continuum source graphite furnace atomic absorption spectrometry

45. Determinação de Ca, K, Mg e Na em petróleo utilizando amostragem direta e espectrometria de absorção atômica com forno de grafite

46. Evaluation of calibration in LA-ICP-MS using filter paper for plant analysis

48. Emprego DAETV-ICP OES para a determinação de impurezas inorgânicas em produtos farmacêuticos

49. Development of a method for the determination of iron and copper in wine by spectrophotometry employing DLLME

50. Development of a dispersive liquid-liquid microextraction method for iron extraction and pré-concentration in water samples with different salinities

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