Determination of carbonyl compounds in water by derivatization–solid-phase microextraction and gas chromatographic analysis

Bao, Meihua; Pantani, Francesco; Griffini, O.; Burrini, D.; Santianni, D.; Barbieri, K.

doi:10.1016/s0021-9673(98)00188-5

Cited by 104 publications

(91 citation statements)

References 24 publications

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“…By using nd-SPME (Lutzhoft et al, 2000), the environmentally relevant salinity (0-500 mM) was found to have minor effect on the partitioning of 4-quinolones to fiber, while pH has strong influence on the partitioning. It was also reported that the addition of NaCl has no effect on the uptake of carbonyl compounds to polydimethylsiloxane fiber (Bao et al, 1998). However, our experiment results demonstrated that the variation of salinity and pH could significantly influence the partition of BPA to the fiber, which indicates these environmental factors could influence the availability of BPA.…”

Section: Influence Of Salinity and Phcontrasting

confidence: 45%

Evaluating the impacts of some environmentally relevant factors on the availability of bisphenol A with negligible-depletion SPME

Peng

Liu

et al. 2006

Chemosphere

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The effect of some environmentally relevant factors including salinity, pH, and humic acids on the availability of bisphenol A (BPA) was evaluated by using the negligible-depletion solid-phase microextraction (nd-SPME) biomimetic method. With the variation of salinity (0-500 mM NaCl) and pH (5.0-8.5) of aqueous solutions, the partition coefficients of BPA between the nd-SPME fiber and the aqueous solution varied in the range of log D = 3.55-3.86, which indicates that the salinity and pH can influence the availability of BPA. By using Acros humic acid as model dissolved organic matter (DOM), it was also demonstrated that the environmental factors such as salinity and pH could affect the partitioning of BPA between DOM and aqueous solutions. The determined partition coefficients of BPA between dissolved organic carbon (DOC) and aqueous solutions were in the range of log D DOC = 4.03-5.60 for Acros humic acid solutions with 1-50 mg l À1 DOC. The influence of salinity and pH on log D DOC was more significant at low concentration (0-5 mg l À1) of DOC.

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Section: Influence Of Salinity and Phcontrasting

confidence: 45%

Evaluating the impacts of some environmentally relevant factors on the availability of bisphenol A with negligible-depletion SPME

Peng

Liu

et al. 2006

Chemosphere

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“…[27][28][29] The simplest way to carry out this process is to dope the fiber with a derivatization reagent and expose it to the sample. Then, the analytes are extracted and converted to derivatives that exhibit a high affinity for the coating ( Figure 1).…”

Section: Gas Chromatographic Analysismentioning

confidence: 99%

“…The agitation speed was set at 500 rpm for the loading of the derivatization reagent in order to accelerate the transfer of the reagent onto the SPME fiber coating. Based on the results of similar experiments, [27][28][29] 50°C and 1 h were adopted as the temperature and time for HS-SPME extraction. The results of the screening illustrated that, of all the commercially available SPME fibers, PDMS-DVB fiber had the best extraction performance for the N-phenylmaleimide derivatives over the rest of the fibers (Figure 2).…”

Section: Fiber Screening and Loading Of The Derivatization Reagentmentioning

confidence: 99%

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Determination of thiol compounds by automated headspace solid‐phase microextraction with in‐fiber derivatization

Wang

Chong

Pawliszyn

2006

Flavour & Fragrance J

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In this article, headspace solid-phase microextraction (HS-SPME) analysis of thiol compounds with both solid and aqueous samples was investigated using N-phenylmaleimide as an in-fiber derivatization reagent. The derivatives were analyzed using GC-MS. The HS-SPME method was executed on an automatic sampler and optimized by studying a variety of factors such as the selection of the fiber, extraction time, temperature, agitation speed, etc. Method validation was carried out by spiking known amounts of thiol compounds into the sample and calculating the concentration by standard addition. The relative standard deviations (RSD) for the majority of the thiols were less than 10%. The developed method resulted in a limit of detection (LOD) in the low microgram per liter for most of the thiols analyzed, which was about one order of magnitude lower than the HS-SPME without derivatization. Finally, the overall method was successfully applied for the determination of thiols in yellow onion, green onion and garlic.

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“…Small polar aldehydes and ketones (such as formaldehyde, glyoxal and acetone) and also dicarbonyl compounds have been extracted from water by pentafluorobenzylhydroxylamine (PFBHA) derivatization followed by LLE (Glaze et al, 1989), SPE (Yamada and Soniya, 1989), PT (Yang et al, 1995) or SPME (Bao et al, 1998;Martos and Pawliszyn, 1998;Keszler et al, 1998;Cancho et al, 2002). PFBHA reacts with the carbonyl group and imparts nonpolar character to carbonyl-containing molecules, allowing them to be extracted from water and analyzed (Glaze et al, 1989;Yamada and Soniya, 1989).…”

Section: Carbonyl Dbpsmentioning

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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Determination of carbonyl compounds in water by derivatization–solid-phase microextraction and gas chromatographic analysis

Cited by 104 publications

References 24 publications

Evaluating the impacts of some environmentally relevant factors on the availability of bisphenol A with negligible-depletion SPME

Evaluating the impacts of some environmentally relevant factors on the availability of bisphenol A with negligible-depletion SPME

Determination of thiol compounds by automated headspace solid‐phase microextraction with in‐fiber derivatization

Optimization of methods for the determination of DBPs

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