Extraction and spectrophotometric determination of Hg2+ as complex anion HgI3-

Eclética Química ◽

10.1590/s0100-46701997000100001 ◽

1997 ◽

Vol 22 (0) ◽

pp. 09-14 ◽

Author(s):

Zaida FERNÁNDEZ TERRA ◽

Rubén DEL TÓRO DÉNIZ ◽

Humberto VARELA DE MOYA

Keyword(s):

Molecular Weight ◽

Metal Complex ◽

High Molecular Weight ◽

Spectrophotometric Determination ◽

Quaternary Ammonium ◽

Complex Anion ◽

Quaternary Ammonium Salts ◽

Ammonium Salts ◽

A method has been developed for the extraction and spectrophotometric determination of Hg2+ in a concentration range of 0.2-1.0 mg L-1; following the Lambert-Beer's law using high molecular weight quaternary ammonium salts dissolved in chloroform. The metal complex anion was determined in the extract in the region UV (260 nm).

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Spectrophotometric determination of trace levels of atmospheric ammonia by conversion into indophenol and extraction with quaternary ammonium salts

Talanta ◽

10.1016/0039-9140(90)80154-8 ◽

1990 ◽

Vol 37 (11) ◽

pp. 1063-1065 ◽

Author(s):

N YAMAMOTO ◽

N KASAHARA ◽

T SHIRAI

Keyword(s):

Spectrophotometric Determination ◽

Quaternary Ammonium ◽

Quaternary Ammonium Salts ◽

Ammonium Salts ◽

Atmospheric Ammonia

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Spectrophotometric determination of uranium with chrome azurol s in the presence of quaternary ammonium salts

Analytica Chimica Acta ◽

10.1016/s0003-2670(01)84671-7 ◽

1976 ◽

Vol 83 ◽

pp. 397-402 ◽

Author(s):

B. Evtimova

Keyword(s):

Spectrophotometric Determination ◽

Quaternary Ammonium ◽

Quaternary Ammonium Salts ◽

Ammonium Salts ◽

Chrome Azurol S

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Extraction/spectrophotometric determination of drugs of quaternary ammonium salts based on ion association between an anionic dye and quaternary ammonium ions.

BUNSEKI KAGAKU ◽

10.2116/bunsekikagaku.45.783 ◽

1996 ◽

Vol 45 (8) ◽

pp. 783-787 ◽

Author(s):

Kensuke ARAI ◽

Miyuki KIMURA ◽

Fumiyo KUSU ◽

Kiyoko TAKAMURA

Keyword(s):

Spectrophotometric Determination ◽

Quaternary Ammonium ◽

Ion Association ◽

Quaternary Ammonium Salts ◽

Ammonium Salts ◽

Ammonium Ions ◽

Anionic Dye ◽

Quaternary Ammonium Ions

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Extraction of zinc chloro complexes by high molecular weight amines and quaternary ammonium salts

Journal of Inorganic and Nuclear Chemistry ◽

10.1016/0022-1902(74)80728-1 ◽

1974 ◽

Vol 36 (9) ◽

pp. 2083-2086 ◽

Author(s):

Om Vir Singh ◽

S.N. Tandon

Keyword(s):

Molecular Weight ◽

High Molecular Weight ◽

Quaternary Ammonium ◽

Quaternary Ammonium Salts ◽

Ammonium Salts ◽

Chloro Complexes

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Simple spectrophotometric determination of long-chain quaternary ammonium salts with o-hydroxy-hydroquinonephthalein and manganese(II).

Analytical Sciences ◽

10.2116/analsci.1.175 ◽

1985 ◽

Vol 1 (2) ◽

pp. 175-179 ◽

Author(s):

Yoshikazu FUJITA ◽

Itsuo MORI ◽

Shoko KITANO ◽

Kinuko FUJITA

Keyword(s):

Spectrophotometric Determination ◽

Quaternary Ammonium ◽

Quaternary Ammonium Salts ◽

Ammonium Salts ◽

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Roles of Interfacial Functions in Analytical Chemistry. Extraction spectrophotometric determination of quaternary ammonium salts utilizing ternary ion associate formation with cinchona-alkaloids and tetraiodofluorescein.

BUNSEKI KAGAKU ◽

10.2116/bunsekikagaku.47.1013 ◽

1998 ◽

Vol 47 (12) ◽

pp. 1013-1020 ◽

Author(s):

Tadao SAKAI ◽

Akihiko HIROSE ◽

Hideto SASAKI

Keyword(s):

Analytical Chemistry ◽

Spectrophotometric Determination ◽

Quaternary Ammonium ◽

Quaternary Ammonium Salts ◽

Cinchona Alkaloids ◽

Ammonium Salts ◽

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Bis[2-(5-bromo-2-pyridylazo)-5-(N-propyl-N-sulpho propylamino)phenolato]cobaltate(III) as a counter ion for the extraction and spectrophotometric determination of long-chain quaternary ammonium salts and tertiary alkylamines in the presence of each other

Analytica Chimica Acta ◽

10.1016/s0003-2670(00)80355-4 ◽

1989 ◽

Vol 219 ◽

pp. 239-245 ◽

Author(s):

Issei Kasahara ◽

Masami Kanai ◽

Masako Taniguchi ◽

Ayako Kakeba ◽

Noriko Hata ◽

...

Keyword(s):

Spectrophotometric Determination ◽

Quaternary Ammonium ◽

Quaternary Ammonium Salts ◽

Ammonium Salts ◽

Counter Ion ◽

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Spectrophotometric determination of trace amounts of quaternary ammonium salts in drugs by ion-pair extraction with bromophenol blue and quinine

The Analyst ◽

10.1039/an9830800608 ◽

1983 ◽

Vol 108 (1286) ◽

pp. 608 ◽

Author(s):

Tadao Sakai

Keyword(s):

Spectrophotometric Determination ◽

Quaternary Ammonium ◽

Ion Pair ◽

Quaternary Ammonium Salts ◽

Ammonium Salts ◽

Bromophenol Blue

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Spectrophotometric determination of quaternary ammonium salts by a flow injection method coupled with thermochromism of ion associates

The Analyst ◽

10.1039/an9921700211 ◽

1992 ◽

Vol 117 (2) ◽

pp. 211 ◽

Author(s):

Tadao Sakai

Keyword(s):

Spectrophotometric Determination ◽

Flow Injection ◽

Quaternary Ammonium ◽

Quaternary Ammonium Salts ◽

Ammonium Salts ◽

Injection Method

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Spectrophotometric Determination of High Molecular Weight Quaternary Ammonium Cations with Picric Acid. Application to Residual Amounts in Polysaccharides.

Analytical Chemistry ◽

10.1021/ac60221a016 ◽

1965 ◽

Vol 37 (2) ◽

pp. 243-246 ◽

Author(s):

J. H. Sloneker ◽

J. B. Mooberry ◽

P. R. Schmidt ◽

J. E. Pittsley ◽

P. R. Watson ◽

...

Keyword(s):

Molecular Weight ◽

High Molecular Weight ◽

Spectrophotometric Determination ◽

Quaternary Ammonium ◽

Picric Acid ◽

Quaternary Ammonium Cations

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