Improved method for the determination of trace perchlorate in ground and drinking waters by ion chromatography

Jackson, Paul; Gokhale, S.; Streib, T.; Rohrer, Jeff; Pohl, Christopher A.

doi:10.1016/s0021-9673(00)00557-4

Cited by 46 publications

(25 citation statements)

References 8 publications

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“…Jackson et al (1999) also discussed the suitability of the AS11; they proposed the use of a large loop injection (1000 µg l -1 ) with a Dionex IonPac AS11 column, a 100 mM hydroxide eluent, suppressed conductivity detection and a MDL of 0.3 µg l -1 . One year later, they reported on the development and application of a new anionexchange column for the determination of trace level perchlorate (Jackson et al, 2000). The IonPac AS16 column is more hydrophilic and has a significantly higher ion-exchange capacity than either the AS5 or AS11 columns.…”

Section: Perchloratementioning

confidence: 99%

Optimization of methods for the determination of DBPs

Cancho-Grande

Ventura²

2013

Global NEST Journal

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Chloroform and other bromochlorotrihalomethanes were first identified as disinfection byproducts (DBPs) in chlorinated water in 1970s. Since then, many other DBPs have been identified such as haloacetonitriles, haloacetaldehydes, cyanogen halides, aldehydes, ketoacids, chlorite, bromate and other organic and inorganic compounds. Due to their occurrence and potential health risks, the U.S.EPA promulgated the Stage I Disinfectants and Disinfection Byproducts (D-DBP) Rule in 1998. To assist water utilities monitoring DBPs in their finished water, the U.S. EPA published a list of approved analytical methods under the D-DBP Rule. In 1996, the U.S. EPA also promulgated the Information Collection Rule (ICR) to collect brackground information on DBPs and pathogens for the Stage II D-DBP-Rule. Actually 500 DBPs are known but few have been investigated for their quantitative occurrence and health effects. Due to the fact that their identification and quantitation have become extremely important to drinking water companies in order to reduce or remove their presence, other analytical methods different from those proposed by U.S. EPA have been optimized and are now commented in this article.

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Section: Perchloratementioning

confidence: 99%

Optimization of methods for the determination of DBPs

Cancho-Grande

Ventura²

2013

Global NEST Journal

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“…Different interfering anions of a concentration of 1 × 10 −3 mol·L −1 in phosphate buffer (pH 7.2, 0.1 mol·L −1 ) were utilized, and selectivity coefficients were obtained using Equation (1).…”

Section: Sensor Selectivitymentioning

confidence: 99%

“…Perchlorate ( ) is an environmental contaminant 4 whose occurrence is most clearly linked with its use as an oxidizer in rocket propellants, fireworks, matches, and highway safety flares [1]. Through accidental releases and improper disposal of materials containing its salts, perchlorate has entered the soil, surface water, and groundwater, and its solubility, mobility, and persistence characteristics have allowed it to contaminate drinking water.…”

Section: Introductionmentioning

confidence: 99%

Solid-Contact Perchlorate Sensor with Nanomolar Detection Limit Based on Cobalt Phthalocyanine Ionophores Covalently Attached to Polyacrylamide

Abbas¹,

Radwan²,

Bühlmann³

et al. 2011

AJAC

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Novel solid-contact perchlorate sensors based on cobalt phthalocyanine-C-monocarboxylic acid (I), and cobalt phthalocyanine-C,C,C,C-tetracarboxylic acid (II) as free ionophores and covalently attached to polyacrylamide (PAA)-ionophores III and IV, respectively were prepared. The all solid-state sensors were constructed by the application of a thin film of a polymer cocktail containing a phthalocyanine ionophore and cetyltrimethylammonium bromide (CTMAB) as a lipophilic cationic additive onto a gold electrode precoated with the conducting polymer poly (3,4-ethylenedioxythiophene) (PEDOT) as an ion and electron transducer. The sensor with 10.3% of ionophore (III) covalently attached to plasticizer-free poly (butyl methacrylate-co-dodecyl methacrylate) (PBDA) exhibited a good selectivity for perchlorate and discriminated many ions, in- -2 mol·L -1 with a lower detection limit (LDL) of 1 × 10 -9 mol·L -1 and gave a stable response over a pH range of 4 -10.5. The all-solid state sensors were utilized for the selective flow injection potentiometric determination of perchlorate in natural water and human urine samples in the nanomolar concentration range.

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“…The tobacco leaf product was shredded before allows quantitation of perchlorate at 5 ppb (mg / l) in freeze-drying. All freeze-dried material was ground the presence of up to 1000 mg / l (ppm) sulfate ion through a 30-mesh screen in a Wiley mill and stored [5,6]. However, environmental matrices and other in air-tight containers at 38C until analyzed.…”

Section: Introductionmentioning

confidence: 99%

Determination of perchlorate at parts-per-billion levels in plants by ion chromatography

Ellington

Evans

2000

Journal of Chromatography A

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A method for the analysis of perchlorate in plants was developed, based on dry weight, and applied to the analysis of plant organs, foodstuffs, and plant products. The method reduced greatly the ionic interferences in water extracts of plant materials. The high background conductivity, due to the plant matrix, was reduced sufficiently to allow quantitation of perchlorate with little or no matrix interference. Ion chromatography (IC) on a microbore AS16 anion-exchange column and a conductivity detector was used for separation and detection of perchlorate from the ionic plant extract. The extract was heated to precipitate proteins, centrifuged, exposed to alumina, and filtered through a cartridge filled with divinylbenzene to yield a water clear extract for IC analysis, even from highly colored solutions. Heating the extract and treatment with alumina reduced substantially the ionic content of the extracts without loss of perchlorate.

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Improved method for the determination of trace perchlorate in ground and drinking waters by ion chromatography

Cited by 46 publications

References 8 publications

Optimization of methods for the determination of DBPs

Optimization of methods for the determination of DBPs

Solid-Contact Perchlorate Sensor with Nanomolar Detection Limit Based on Cobalt Phthalocyanine Ionophores Covalently Attached to Polyacrylamide

Determination of perchlorate at parts-per-billion levels in plants by ion chromatography

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