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51

Chromous Chloride Reductions. VI. Derivative Formation for the Simultaneous Identification of Heptachlor and Endrin Pesticide Residues by Gas Chromatography

Chau, Alfred S Y, Cochrane, W P

Journal:

Journal of AOAC International

Year:

1971

File:

PDF, 785 KB

1971

52

Confirmation of Pesticide Residue Identity. VII. Solid Matrix Derivation Procedure for the Simultaneous Confirmation of Heptachlor and Endrin Residues in the Presence of Large Quantities of Polychlorinated Biphenyls

Chau, Alfred S Y

Journal:

Journal of AOAC International

Year:

1974

File:

PDF, 642 KB

1974

53

Evaluation of XAD-2 for Multiresidue Extraction of Organochlorine Pesticides and Polychlorinated Biphenyls from Natural Waters

Coburn, John A, Yaldmanis, Ilze A, Chau, Alfred S Y

Journal:

Journal of AOAC International

Year:

1977

File:

PDF, 416 KB

1977

54

Confirmation of Pesticide Residue Identity. I. Derivative Formation for the Confirmation of Photoproducts of Endrin: Hexachloro- and Pentachloro-ketone Pesticide Residues by Gas Chromatography

Chau, Alfred S Y

Journal:

Journal of AOAC International

Year:

1972

File:

PDF, 649 KB

1972

55

Confirmation of Pesticide Residue Identity. XI. Organophosphorus Pesticides

Lee, Hing-Biu, Weng, Li-Da, Chau, Alfred S Y

Journal:

Journal of AOAC International

Year:

1984

File:

PDF, 461 KB

1984

56

Report on Water; Salt

Chau, Alfred S Y

Journal:

Journal of AOAC International

Year:

1985

File:

PDF, 160 KB

1985

57

Solvent Effects on Response Factors for Polynuclear Aromatic Hydrocarbons Determined by Capillary Gas Chromatography Using Splitless Injections

Lee, Hing-Biu, Szawiola, Richard, Chau, Alfred S Y

Journal:

Journal of AOAC International

Year:

1987

File:

PDF, 279 KB

1987

58

Gas-Liquid Chromatographic Determination of 3-Trifluoromethyl-4-nitrophenol in Natural Waters

Coburn, John A, Chau, Alfred S Y

Journal:

Journal of AOAC International

Year:

1976

File:

PDF, 318 KB

1976

59

Drinking, Ground, and Surface Waters

Chau, Alfred S Y

Journal:

Journal of AOAC International

Year:

1986

File:

PDF, 146 KB

1986

60

Confirmation of Pesticide Residue Identity. V. Alternative Procedure for Derivative Formation in Solid Matrix for the Confirmation of Î±- and Î²-Endosulfan by Gas Chromatography

Chau, Alfred S Y

Journal:

Journal of AOAC International

Year:

1972

File:

PDF, 542 KB

1972

61

Chemical Derivatization Analysis of Pesticide Residues. X. Analysis of Ten Acid Herbicides in Natural Waters

Lee, Hing-Biu, Stokker, Yvonne D, Chau, Alfred S Y

Journal:

Journal of AOAC International

Year:

1986

File:

PDF, 412 KB

1986

62

Confirmation of Pesticide Residue Identity. IV. Derivative Formation in Solid Matrix for the Confirmation of Î±- and Î²-Endosulfan by Gas Chromatography

Chau, Alfred S Y, Terry, Ken

Journal:

Journal of AOAC International

Year:

1972

File:

PDF, 349 KB

1972

63

Confirmation of Pesticide Residue Identity. VIII. Organophosphorus Pesticides

Coburn, John A, Chau, Alfred S Y

Journal:

Journal of AOAC International

Year:

1974

File:

PDF, 629 KB

1974

64

Confirmation of Pesticide Residue Identity. II. Derivative Formation in Solid Matrix for the Confirmation of DDT, DDD, Methoxychlor, Perthane, cis- and trans-Chlordane, Heptachlor, and Heptachlor Epoxide Pesticide Residues by Gas Chromatography

Y Chau, Alfred S, Lanouette, M

Journal:

Journal of AOAC International

Year:

1972

File:

PDF, 789 KB

1972

65

Multiresidue Analysis of Fourteen Organophosphorus Pesticides in Natural Waters

Ripley, Brian D, Wilkinson, Robert J, Chau, Alfred S Y

Journal:

Journal of AOAC International

Year:

1974

File:

PDF, 878 KB

1974

66

Determination of Pentachlorophenol in Natural and Waste Waters

Chau, Alfred S Y, Coburn, John A

Journal:

Journal of AOAC International

Year:

1974

File:

PDF, 473 KB

1974

67

Analysis of Pesticide Residues by Chemical Derivatization. II. N-Methylcarbamates in Natural Water and Soils

Coburn, John A, Ripley, Brian D, Chau, Alfred S Y

Journal:

Journal of AOAC International

Year:

1976

File:

PDF, 646 KB

1976

68

Chromous Chloride Reduction. VIII. Reaction of Some Derivatives and Degradation Products of Heptachlor with Chromous Chloride-Ethylenediamine Complex and Nuclear Magnetic Resonance and Mass Spectra of the Products

Chau, Alfred S Y, Demayo, Adrian, Apsimon, John W, Buccini, John A, Fruchier, Alain

Journal:

Journal of AOAC International

Year:

1974

File:

PDF, 943 KB

1974

69

Confirmation of Pesticide Residue Identity. VI. Derivative Formation in Solid Matrix for Confirmation of Heptachlor and Endosulfan Isomers

Chau, Alfred S Y, Terry, Ken

Journal:

Journal of AOAC International

Year:

1974

File:

PDF, 484 KB

1974

70

Column Chromatographic Determination of Mirex, Photomirex, and Poly chlorinated Biphenyls in Lake Sediments

Chau, Alfred S Y, Babjak, Ludwig J

Journal:

Journal of AOAC International

Year:

1979

File:

PDF, 550 KB

1979

71

Analysis of Pesticide Residues by Chemical Derivatization. V. Multiresidue Analysis of Eight Phenoxyalkanoic Acid Herbicides in Natural Waters

Agemian, Haig, Chau, Alfred S Y

Journal:

Journal of AOAC International

Year:

1977

File:

PDF, 563 KB

1977

72

Interlaboratory Quality Control Study of the Analysis of Water for Pesticides

Aspila, Keijo I, Carron, John M, Chau, Alfred S Y

Journal:

Journal of AOAC International

Year:

1977

File:

PDF, 531 KB

1977

73

Analysis of Pesticides by Chemical Derivatization. III. Gas Chromatographic Characteristics and Conditions for the Formation of Pentafluorobenzyl Derivatives of Ten Herbicidal Acids

Chau, Alfred S Y, Terry, Ken

Journal:

Journal of AOAC International

Year:

1976

File:

PDF, 304 KB

1976

74

Analytical Reference Materials. II. Preparation and Sample Integrity of Homogeneous Fortified Wet Sediment for Polychlorinated Biphenyl Quality Control Studies

Chau, Alfred S Y, Carron, John, Lee, Hing-Biu

Journal:

Journal of AOAC International

Year:

1979

File:

PDF, 355 KB

1979

75

Analytical Reference Materials. III. Preparation and Homogeneity Test of Large Quantities of Wet and Dry Sediment Reference Materials for Long Term Polychlorinated Biphenyl Quality Control Studies

Chau, Alfred S Y, Lee, Hing-Biu

Journal:

Journal of AOAC International

Year:

1980

File:

PDF, 377 KB

1980

76

Confirmation of Pesticide Residues Identity. X. Mirex

Chau, Alfred S Y, Carron, John M, Tse, Hung

Journal:

Journal of AOAC International

Year:

1978

File:

PDF, 476 KB

1978

77

Evaluation of 14 Charcoal-Polyurethane Foam Mixtures for the Separation of Mirex and Photomirex from Aroclor 1254

Babjak, Ludwig J, Chau, Alfred S Y

Journal:

Journal of AOAC International

Year:

1979

File:

PDF, 347 KB

1979

78

Analytical Reference Materials. I. Preparation and Purification of Photomirex

Chau, Alfred S Y, Thomson, Rod

Journal:

Journal of AOAC International

Year:

1979

File:

PDF, 653 KB

1979

79

Analysis of Pesticide Residues by Chemical Derivatization. VI. Analysis of Ten Acid Herbicides in Sediment1

Lee, Hing-Biu, Chau, Alfred S Y

Journal:

Journal of AOAC International

Year:

1983

File:

PDF, 600 KB

1983

80

Gas Chromatographic Determination of Trifluralin, Diallate, Triallate, Atrazine, Barban, Diclofop-Methyl, and Benzoylprop-Ethyl in Sediments at Parts Per Billion Levels

Lee, Hing-Biu, Chau, Alfred S Y

Journal:

Journal of AOAC International

Year:

1983

File:

PDF, 503 KB

1983

81

Chemical Derivatization Analysis of Pesticide Residues. VIII. Analysis of 15 Chlorophenols in Natural Water by In Situ Acetylation

Lee, Hing-Biu, Weng, Li-Da, Chau, Alfred S Y

Journal:

Journal of AOAC International

Year:

1984

File:

PDF, 636 KB

1984

82

Determination of Trif luralin, Diallate, Triallate, Atrazine, Barban, Diclofop-Methyl, and Benzoylprop-Ethyl in Natural Waters at Parts per Trillion Levels

Lee, Hing-Biu, Chau, Alfred S Y

Journal:

Journal of AOAC International

Year:

1983

File:

PDF, 754 KB

1983

83

Report on Water

Chau, Alfred S Y

Journal:

Journal of AOAC International

Year:

1983

File:

PDF, 119 KB

1983

84

Analysis of Pesticide Residues by Chemical Derivatization. VII. Chromatographic Properties of Pentafluorobenzyl Ether Derivatives of Thirty-two Phenols1

Lee, Hing-Biu, Chau, Alfred S Y

Journal:

Journal of AOAC International

Year:

1983

File:

PDF, 778 KB

1983

85

Chemical Derivatization Analysis of Pesticide Residues. IX. Analysis of Phenol and 21 Chlorinated Phenols in Natural Waters by Formation of Pentafluorobenzyl Ether Derivatives

Lee, Hing-Biu, Weng, Li-Da, Chau, Alfred S Y

Journal:

Journal of AOAC International

Year:

1984

File:

PDF, 788 KB

1984

86

Analysis of Phenols by Chemical Derivatization. V. Determination of Pentachlorophenol and 19 Other Chlorinated Phenols in Sediments

Lee, Hing-Biu, Stokker, Yvonne D, Chau, Alfred S Y

Journal:

Journal of AOAC International

Year:

1987

File:

PDF, 584 KB

1987

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