Residue determination of hydrazine in water by derivatization and gas chromatography

Selim, Sami; Warner, Charles R

doi:10.1016/s0021-9673(00)95634-6

Cited by 20 publications

(4 citation statements)

References 12 publications

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“…Until now, numerous methods have been developed for the determination of trace amounts of hydrazine in aqueous solutions such as spectroscopy, 17-20 voltammetry, 21,22 titrimetry, 23,24 ion chromatography, 25 gas chromatography, [26][27][28] as well as other techniques. 29 High-performance liquid chromatography (HPLC) with ultraviolet (UV) detection was also used to analyze hydrazine in air 30,31 and sludge 32 samples, which provided a detection limit of 0.076 g m −3 and 20 g L −1 , for air and sludge respectively.…”

Section: Introductionmentioning

confidence: 99%

Split-flow Taylor dispersion technique for diffusivity and concentration measurements of hydrazine in aqueous solution

2014

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A sensitive continuous-flow monitoring method is developed for the determination of the diffusion coefficient and concentration of hydrazine in an aqueous solution. The effect of pH on the diffusion coefficient of hydrazine in water was studied at room temperature using the developed split-flow Taylor dispersion technique. The hydrazine calibration curve was linear in the range of 10−1000 ppb and the limit of quantification was 10 ppb. The results showed that the diffusion coefficient of hydrazine does not change significantly over the pH range of 4.01−8.27 but increases in alkaline media of pH greater than 8.27. This method can be used for accurate determination of hydrazine concentration in aqueous flow systems.

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Section: Introductionmentioning

confidence: 99%

Split-flow Taylor dispersion technique for diffusivity and concentration measurements of hydrazine in aqueous solution

2014

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“…Gas chromatography (GC) was another technique used for hydrazine analysis. , Hydrazine was derivatized with acetone in an aqueous phase. The formed acetone azine had much lower solubility in water than hydrazine and could be extracted into a low-polarity organic solvent.…”

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confidence: 99%

Analysis of Hydrazine in Drinking Water by Isotope Dilution Gas Chromatography/Tandem Mass Spectrometry with Derivatization and Liquid−Liquid Extraction

Davis

2008

Anal. Chem.

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A new isotope dilution gas chromatography/chemical ionization/tandem mass spectrometric method was developed for the analysis of carcinogenic hydrazine in drinking water. The sample preparation was performed by using the optimized derivatization and multiple liquid-liquid extraction techniques. Using the direct aqueous-phase derivatization with acetone, hydrazine and isotopically labeled hydrazine-(15)N2 used as the surrogate standard formed acetone azine and acetone azine-(15)N2, respectively. These derivatives were then extracted with dichloromethane. Prior to analysis using methanol as the chemical ionization reagent gas, the extract was dried with anhydrous sodium sulfate, concentrated through evaporation, and then fortified with isotopically labeled N-nitrosodimethylamine-d6 used as the internal standard to quantify the extracted acetone azine-(15)N2. The extracted acetone azine was quantified against the extracted acetone azine-(15)N2. The isotope dilution standard calibration curve resulted in a linear regression correlation coefficient (R) of 0.999. The obtained method detection limit was 0.70 ng/L for hydrazine in reagent water samples, fortified at a concentration of 1.0 ng/L. For reagent water samples fortified at a concentration of 20.0 ng/L, the mean recoveries were 102% with a relative standard deviation of 13.7% for hydrazine and 106% with a relative standard deviation of 12.5% for hydrazine-(15)N2. Hydrazine at 0.5-2.6 ng/L was detected in 7 out of 13 chloraminated drinking water samples but was not detected in the rest of the chloraminated drinking water samples and the studied chlorinated drinking water sample.

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“…In a subsequent study, hydrazine and MMH in aqueous solutions were reacted with 2,4-pentanedione to form the corresponding pyrazoles prior to analysis (21). Other derivatization schemes for the determination of hydrazines in cigarette smoke, water, blood, urine, and air have utilized pentafluorobenzaldehyde, acetone, p-chlorobenzaldehyde and salicylaldehyde (22)(23)(24)(25)(26)(27)(28). Additional studies have shown that high-performance liquid chromatography/electrochemical detection can be used to determine the underivatized hydrazines in aqueous solution (29,30).…”

mentioning

confidence: 99%

“…All of the previously reported procedures require sample work-up steps, many of the reported hydrazine derivatives are not stable, and very few of the techniques have actually been used to determine the hydrazines in air. The success of derivatization/chromatography procedures for hydrazines in aqueous systems (23)(24)(25)(26)(27), however, suggests that a similar approach may prove useful for the determination of atmospheric hydrazine levels.…”

mentioning

confidence: 99%

Simultaneous determination of hydrazine, methylhydrazine, and 1,1-dimethylhydrazine in air by derivatization/gas chromatography

Holtzclaw¹,

Rose²,

Wyatt³

et al. 1984

Anal. Chem.

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Residue determination of hydrazine in water by derivatization and gas chromatography

Cited by 20 publications

References 12 publications

Split-flow Taylor dispersion technique for diffusivity and concentration measurements of hydrazine in aqueous solution

Split-flow Taylor dispersion technique for diffusivity and concentration measurements of hydrazine in aqueous solution

Analysis of Hydrazine in Drinking Water by Isotope Dilution Gas Chromatography/Tandem Mass Spectrometry with Derivatization and Liquid−Liquid Extraction

Simultaneous determination of hydrazine, methylhydrazine, and 1,1-dimethylhydrazine in air by derivatization/gas chromatography

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