Designed multifunctional ionic liquids–magnetic graphene nanocomposites as the adsorbent of MSPE for the determination of preservatives

2018 ◽  
Vol 10 (12) ◽  
pp. 1420-1430 ◽  
Author(s):  
Shurui Cao ◽  
Yaling Chen ◽  
Lei Zhang ◽  
Cunxian Xi ◽  
Xianliang Li ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Structural Design ◽  
Sulfonic Acid ◽  
Benzene Sulfonic Acid ◽  
Graphene Nanocomposites ◽  
Naphthalene Sulfonic Acid ◽  
Magnetic Graphene

A new structural design for fabricating four types of ionic liquids was successfully adapted, which was based on changing the anion of 1-vinyl-3-octylimidazolium bromide (VOIm+Br−) with benzene sulfonic acid (BenSO3−), 2-naphthalene sulfonic acid (NapSO3−), 1-anthraquinonesulfonic acid (AQSO3−) and 1,2-naphthoquinone-4-sulfonic acid (NQSO3−).

Automated High Pressure Liquid Chromatographic Determination of Uncombined Intermediates in FD&C Red No. 40 and FD&C Yellow No. 6

1979 ◽  
Vol 62 (6) ◽  
pp. 1342-1349
Author(s):  
Manjeet Singh ◽  
Gloria Adams
Keyword(s):  
Sulfonic Acid ◽  
Sulfanilic Acid ◽  
Hplc Method ◽  
Benzene Sulfonic Acid ◽  
Naphthalene Sulfonic Acid ◽  
Automated Hplc ◽  
Liquid Chromatographic ◽  
Methyl Benzene ◽  
Good Agreement

Abstract An automated high pressure liquid chromatographic (HPLC) method is presented for the isolation and determination of uncombined intermediates in FD&C Red No. 40 (Allura Red AC) and FD&C Yellow No. 6 (CI No. 15985). Samples of FD&C Red No. 40 containing 0.1-0.4% cresidine sulfonic acid (4-amino-5-methoxy-2-methyl benzene sulfonic acid), 0.1-0.3% Schaeffer's salt (6-hydroxy-2-naphthalene sulfonic acid), 0.02- 0.08% 4,4'- (diazoamino) -bis (5-methoxy-2-methyl benzene sulfonic acid), and 0.1-1.0% 6,6'-oxybis (2-naphthalene sulfonic acid) were prepared and analyzed by this method. Recoveries ranged between 95 and 101%. Sixty samples of FD&C Red No. 40 were analyzed by the automated HPLC method. Results showed good agreement with those of the manual HPLC method. Samples of FD&C Yellow No. 6 containing 0.1-0.4% sulfanilic acid (4-aminobenzene sulfanilic acid), 0.1-0.3% Schaeffer's salt, 0.02-0.08% 4,4'-(diazoamino)-dibenzene sulfonic acid, and 0.2-1.0% 6,6'-oxybis (2-naphthalene sulfonic acid) were prepared and analyzed by this method. Recoveries ranged between 96 and 101%. Forty samples of FD&C Yellow No. 6 were analyzed by the automated HPLC method. Results showed good agreement with those of the manual HPLC method.

Determination of aldehydes in water samples by capillary electrophoresis after derivatization with hydrazino benzene sulfonic acid

1998 ◽  
Vol 48 (11-12) ◽  
pp. 807-810 ◽  
Author(s):  
A. Asthana ◽  
D. Bose ◽  
S. Kulshrestha ◽  
S. P. Pathak ◽  
S. K. Sanghi ◽  
...  
Keyword(s):  
Capillary Electrophoresis ◽  
Water Samples ◽  
Sulfonic Acid ◽  
Benzene Sulfonic Acid

Polyaniline co-doped with dodecyl benzene sulfonic acid and zwitterionic-based ionic liquids prepared by inverse emulsion polymerization

2020 ◽  
Vol 266 ◽  
pp. 116435 ◽  
Author(s):  
Bluma G. Soares ◽  
Mayara R.S. Nascimento ◽  
Adriane S. Sena ◽  
Tamara Indrusiak ◽  
Loan F.C. Souto ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Emulsion Polymerization ◽  
Sulfonic Acid ◽  
Benzene Sulfonic Acid ◽  
Inverse Emulsion Polymerization ◽  
Inverse Emulsion ◽  
Dodecyl Benzene Sulfonic Acid ◽  
Co Doped

scholarly journals Catalytic spectrophotometric determination of Mo(VI) in water samples using 4-amino-3-hydroxy-naphthalene sulfonic acid

2016 ◽  
Vol 9 ◽  
pp. S1105-S1109 ◽  
Author(s):  
Abdolreza Iraj Mansouri ◽  
Mohammad Mirzaei ◽  
Daryoush Afzali ◽  
Farideh Ganjavie
Keyword(s):  
Spectrophotometric Determination ◽  
Water Samples ◽  
Sulfonic Acid ◽  
Naphthalene Sulfonic Acid
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