scholarly journals Simultaneous determination of sodium and potassium ions in river water by ion chromatography using silica gels as a stationary phase.

1988 ◽  
Vol 4 (1) ◽  
pp. 81-85 ◽  
Author(s):  
Tadashi IWACHIDO ◽  
Kenji ISHIMARU ◽  
Shoji MOTOMIZU
Keyword(s):  
Stationary Phase ◽  
Simultaneous Determination ◽  
River Water ◽  
Ion Chromatography ◽  
Silica Gels ◽  
Potassium Ions ◽  
Sodium And Potassium

scholarly journals On line pre-concentration for simultaneous determination of low molecular weight organic acids and inorganic anions in Amazonian river water samples employing ion chromatography with conductivity detection

2009 ◽  
Vol 39 (2) ◽  
pp. 397-404 ◽  
Author(s):  
Cristiane Azevedo Tumang ◽  
Alex Vladimir Krusche ◽  
Reynaldo Luis Victoria ◽  
Jeffrey Edward Richey
Keyword(s):  
Organic Acids ◽  
Simultaneous Determination ◽  
River Water ◽  
Ion Chromatography ◽  
Inorganic Anions ◽  
Electrochemical Detector ◽  
Conductivity Detection ◽  
Column Model ◽  
On Line

An ion chromatography procedure, employing an IonPac AC15 concentrator column was used to investigate on line preconcentration for the simultaneous determination of inorganic anions and organic acids in river water. Twelve organic acids and nine inorganic anions were separated without any interference from other compounds and carry-over problems between samples. The injection loop was replaced by a Dionex AC15 concentrator column. The proposed procedure employed an auto-sampler that injected 1.5 ml of sample into a KOH mobile phase, generated by an Eluent Generator, at 1.5 mL min-1, which carried the sample to the chromatographic columns (one guard column, model AG-15, and one analytical column, model AS15, with 250 x 4mm i.d.). The gradient elution concentrations consisted of a 10.0 mmol l-1 KOH solution from 0 to 6.5 min, gradually increased to 45.0 mmol l-1 KOH at 21 min., and immediatelly returned and maintained at the initial concentrations until 24 min. of total run. The compounds were eluted and transported to an electro-conductivity detection cell that was attached to an electrochemical detector. The advantage of using concentrator column was the capability of performing routine simultaneous determinations for ions from 0.01 to 1.0 mg l-1 organic acids (acetate, propionic acid, formic acid, butyric acid, glycolic acid, pyruvate, tartaric acid, phthalic acid, methanesulfonic acid, valeric acid, maleic acid, oxalic acid, chlorate and citric acid) and 0.01 to 5.0 mg l-1 inorganic anions (fluoride, chloride, nitrite, nitrate, bromide, sulfate and phosphate), without extensive sample pretreatment and with an analysis time of only 24 minutes.

scholarly journals Simultaneous Determination of Nitrite, Nitrate, and Ammonium Ions in Lake and River-Water Samples by Ion Chromatography

2010 ◽  
Vol 59 (10) ◽  
pp. 879-884 ◽  
Author(s):  
Masahito Tanaka ◽  
Hideto Ohguni ◽  
Katsuhiko Adachi ◽  
Tomoaki Tsumura ◽  
Takeshi Hirokawa ◽  
...  
Keyword(s):  
Simultaneous Determination ◽  
River Water ◽  
Ion Chromatography ◽  
Water Samples ◽  
Ammonium Ions ◽  
River Water Samples ◽  
Nitrite Nitrate

Simultaneous determination of ammonium and six alkylamines in cosmetics by ion chromatography

2010 ◽  
Vol 28 (7) ◽  
pp. 702-707 ◽  
Author(s):  
Zhixiong ZHONG ◽  
Gongke LI ◽  
Binghui ZHU ◽  
Zhibin LUO ◽  
Ximei WU
Keyword(s):  
Simultaneous Determination ◽  
Ion Chromatography

scholarly journals Simultaneous determination of residual chlorine and other anions in water by ion chromatography

2003 ◽  
Vol 52 (9) ◽  
pp. 819-824 ◽  
Author(s):  
Li HUI ◽  
Makoto NONOMURA ◽  
Noriko ITOH
Keyword(s):  
Simultaneous Determination ◽  
Ion Chromatography ◽  
Residual Chlorine

scholarly journals Simultaneous determination of clobutinol hydrochloride and doxylamine succinate from syrups by RP HPLC using a new stationary phase containing embedded urea polar groups

2012 ◽  
Vol 48 (2) ◽  
pp. 315-323 ◽  
Author(s):  
Paulo Cesar Pires Rosa ◽  
Isabel Cristina Sales Fontes Jardim
Keyword(s):  
Stationary Phase ◽  
Simultaneous Determination ◽  
Reversed Phase ◽  
Hplc Method ◽  
Array Detector ◽  
Polar Groups ◽  
Ich Guidelines ◽  
Relative Standard ◽  
New Stationary Phase

A new, simple, fast, reproducible and sensitive reversed phase HPLC method, using a new stationary phase containing embedded urea polar groups, has been developed and validated for the simultaneous determination of clobutinol hydrochloride (CLO) and doxylamine succinate (DOX) in syrups. The determination was carried out on a C8 urea column (125 mm x 3.9 mm i.d., 5 µm particle size) synthetized at the Liquid Chomatography Laboratory (LabCrom) of the Chemistry Institute of Unicamp. The mobile phase consisted of a mixture of acetonitrile:methanol:phosphate buffer (pH 2.5) in the gradient mode. The diode array detector (DAD) was operated at 230 nm for CLO and 262 nm for DOX. The method showed adequate precision, with relative standard deviations (RSD) less than 1%. The presence of the excipients did not interfere in the results of the analysis. Accuracy was determined by adding standards of the drugs to a placebo and good recovery values were obtained. The analytical curves were linear (r² 0.9999 for CLO and 0.9998 for DOX) over a wide concentration range (2.4-336 µg mL-1 for CLO and 2.3-63 µg mL-1 for DOX). The solutions were stable for at least 72 hours at room temperature. The criteria for validation using the ICH guidelines were fulfilled.

scholarly journals Study On Simultaneous Determination of Ni, Pb and Cd by Ion Chromatography

2018 ◽  
Vol 146 ◽  
pp. 012068 ◽  
Author(s):  
P.F. Gao ◽  
X.W. Zhang ◽  
H.Z. Kuang ◽  
Q.Q. Li ◽  
Y. Li
Keyword(s):  
Simultaneous Determination ◽  
Ion Chromatography
Sign in / Sign up

Export Citation Format

Share Document