Detection of multiple anions by thin-layer chromatography

Kato, Noriyuki; Sakayanagi, Masataka; Nakayama, Takahiro; Nishimura, Hideo; Ogamo, Akira

doi:10.1016/s0021-9673(02)01115-9

Cited by 6 publications

(3 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The radiochemical purity of stock sodium [ 36 Cl]chlorate was assessed using two chromatographic methods. Thin-layer chromatography (TLC) was performed on 5 cm × 20 cm, aluminum-backed Silica Gel 60 F254 plates using a solvent system composed of 90% acetonitrile and 10% (v/v) of a 33% (w/v) methylamine solution in water (17); radiochlorine was quantified using a Bioscan Imaging Scanner (Bioscan, Inc., Washington, DC).…”

Section: Methodsmentioning

confidence: 99%

Tissue Distribution, Elimination, and Metabolism of Dietary Sodium [³⁶Cl]Chlorate in Beef Cattle

Smith

Anderson

Ellig

et al. 2005

J. Agric. Food Chem.

View full text Add to dashboard Cite

Two steers (approximately 195 kg) were each dosed with 62.5 or 130.6 mg/kg body weight sodium [36Cl]chlorate for three consecutive days. All excreta were collected during the dosing and 8 h withdrawal periods. The apparent radiochlorine absorption was 62-68% of the total dose with the major excretory route being urine. Parent chlorate was 65-100% of the urinary radiochlorine; chloride was the only other radiochlorine species present. Similarly, residues in edible tissues were composed of chloride and chlorate with chloride being the major radiolabeled species present. Chlorate represented 28-57% of the total radioactive residues in skeletal muscle; in liver, kidney, and adipose tissues, chlorate ion represented a smaller percentage of the total residues. Chlorate residues in the low dose steer were 26 ppm in kidney, 14 ppm in skeletal muscle, 2.0 ppm in adipose tissue, and 0.7 ppm in liver. These data indicate that sodium chlorate may be a viable preharvest food safety tool for use by the cattle industry.

show abstract

Section: Methodsmentioning

confidence: 99%

Tissue Distribution, Elimination, and Metabolism of Dietary Sodium [³⁶Cl]Chlorate in Beef Cattle

Smith

Anderson

Ellig

et al. 2005

J. Agric. Food Chem.

View full text Add to dashboard Cite

show abstract

“…Drawbacks of TLC are poor detection sensitivity, mediocre accuracy, and low precision. Still, due to its simplicity TLC is a commonly used technique for anion separation (Kato et al, 2002), product examination, and reaction monitoring by organic chemists (Chernestova & Morlock, 2011).…”

Section: A Liquid Chromatographymentioning

confidence: 99%

Mass spectrometric detection of trace anions: The evolution of paired‐ion electrospray ionization (PIESI)

Breitbach

Berthod

Huang

et al. 2015

Mass Spectrometry Reviews

View full text Add to dashboard Cite

The negative-ion mode of electrospray ionization mass spectrometry (ESI-MS) is intrinsically less sensitive than the positive-ion mode. The detection and quantitation of anions can be performed in positive-ion mode by forming specific ion-pairs during the electrospray process. The paired-ion electrospray ionization (PIESI) method uses specially synthesized multifunctional cations to form positively charged adducts with the anions to be analyzed. The adducts are detected in the positive-ion mode and at higher m/z ratios to produce excellent signal-to-noise ratios and limits of detection that often are orders of magnitude better than those obtained with native anions in the negative-ion mode. This review briefly summarizes the different analytical approaches to detect and separate anions. It focuses on the recently introduced PIESI method to present the most effective dicationic, tricationic, and tetracationic reagents for the detection of singly and multiply charged anions and some zwitterions. The mechanism by which specific structural molecular architectures can have profound effects on signal intensities is also addressed.

show abstract

“…Some species‐specific sample preparation techniques and analysis methods have been developed for the identification of specific inorganic species, including the sublimation of red phosphorus with subsequent analysis by gas chromatography‐mass spectrometry (5,6). Several wet chemical methods are also available for the characterization of inorganic species (6–9), but the majority of these techniques do not meet the needs of this study: that is, to characterize phosphate, phosphite, and hypophosphite in complex mixtures at low concentrations.…”

mentioning

confidence: 99%

Capillary Electrophoretic Analysis of Phosphorus Species in Clandestine Methamphetamine Laboratory Samples

Knops¹,

Northrop²,

Person

2005

Journal of Forensic Sciences

View full text Add to dashboard Cite

The clandestine manufacture of methamphetamine is a spreading epidemic. Manufacturing methods are constantly changing, necessitating the implementation of new analytical tools to identify materials from these labs. Characterization of phosphate, phosphite, and hypophosphite ions is necessary to distinguish the various phosphorus-iodine manufacturing methods that are popular methods for reducing pseudoephedrine to methamphetamine. This work describes a capillary electrophoresis method to separate acetate, azide, bromide, carbonate, chlorate, chloride, chromate, fluoride, hypophosphite, iodide, nitrate, nitrite, perchlorate, phosphate, phosphite, sulfate, sulfite, and thiocyanate. The CElixerOA 8.2 dynamic coating system was modified by lowering the capillary temperature to 15 degrees C and using an acid flush between runs to remove adsorbed materials. This allows detection of ions down to between 10 and 30 parts per million with percent relative standard deviations of normalized migration times under 0.1%. This method is a valuable tool for the characterization of phosphate, phosphite, and hypophosphite in routine analysis of clandestine methamphetamine manufacturing evidence and has a broader application in other areas of forensic analysis.

show abstract

Detection of multiple anions by thin-layer chromatography

Cited by 6 publications

References 11 publications

Tissue Distribution, Elimination, and Metabolism of Dietary Sodium [³⁶Cl]Chlorate in Beef Cattle

Tissue Distribution, Elimination, and Metabolism of Dietary Sodium [³⁶Cl]Chlorate in Beef Cattle

Mass spectrometric detection of trace anions: The evolution of paired‐ion electrospray ionization (PIESI)

Capillary Electrophoretic Analysis of Phosphorus Species in Clandestine Methamphetamine Laboratory Samples

Contact Info

Product

Resources

About

Detection of multiple anions by thin-layer chromatography

Cited by 6 publications

References 11 publications

Tissue Distribution, Elimination, and Metabolism of Dietary Sodium [36Cl]Chlorate in Beef Cattle

Tissue Distribution, Elimination, and Metabolism of Dietary Sodium [36Cl]Chlorate in Beef Cattle

Mass spectrometric detection of trace anions: The evolution of paired‐ion electrospray ionization (PIESI)

Capillary Electrophoretic Analysis of Phosphorus Species in Clandestine Methamphetamine Laboratory Samples

Contact Info

Product

Resources

About

Tissue Distribution, Elimination, and Metabolism of Dietary Sodium [³⁶Cl]Chlorate in Beef Cattle

Tissue Distribution, Elimination, and Metabolism of Dietary Sodium [³⁶Cl]Chlorate in Beef Cattle