Determination of volatile organic compounds in water using headspace knotted hollow fiber microextraction

Chen, Pai‐Shan; Tseng, Yu-Hsiang; Chuang, Yuh-Lin; Chen, Jung-Hsuan

doi:10.1016/j.chroma.2015.03.067

Cited by 31 publications

(13 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The LOD and LOQ values presented in this work are similar to LODs and LOQs reported for VOCs analysis in drinking water samples and similar types of water samples developed for Jurdakova et al (2008), Chary and Fernandez-Alba (2012), and Ueta et al (2013). Moreover, The LOD and LOQ values of some VOCs studied in this work are less than the values obtained in the other studies (Kubinec et al 2004;Alonso et al 2011;Chen et al 2015) in literature for the analysis of VOCs in water samples. The accuracy of the method…”

Section: Lod and Loqsupporting

confidence: 81%

Method validation and measurement uncertainty of possible thirty volatile organic compounds (VOCs) presented in the polyethylene present in bottled drinking waters sold in Turkey

Güzel

Canlı

2020

J Anal Sci Technol

View full text Add to dashboard Cite

This study was actualized for the simultaneous determination of possible thirty VOCs presented in drinking waters in Turkey by direct injection to purge and trap (PT) gas chromatography-mass spectrometry (GC-MS). It consists of selectivity, linearity, the limit of detection (LOD) and limit of quantification (LOQ), accuracy (recovery), precision, trueness, and measurement uncertainty studies. In linearity, the values of correlation coefficients (r2) for the matrix-matched calibration curves were higher than 0.998 for all analytes. This method showed high sensitivity (LOD: 0.011–0.040 μg/L; LOQ: 0.035–0.133 μg/L), quite sufficient recovery (82.6% to 103.1%) for accuracy, and acceptable precision (intra-day recovery: 81.5–104.4%, relative standard deviation (RSD): 1.04–9.81%; inter-day recovery: 92.6–104.1%, RSD: 1.15–7.52%). All the recovery and RSD values obtained below 10% are evaluated agreeable in point of the AOAC and EURACHEM/CITAC validation guidelines. The recovery percentages of all analytes in CRM changed between 80.3 and 109.9% and the RSD (%) values for each analyte obtained below 10%. The proficiency test results were satisfactory and comparable (z score less than or equal to 2.0 is no questionable or satisfactory) to those obtained by other laboratories participating in the round. The calculated percentage of relative uncertainties for each analyte changed from 2.99 to 10.10% and the major contribution to uncertainty budget arises from the calibration curve and repeatability. Therefore, the results demonstrate that this method is applicable for the determination of possible thirty VOCs in drinking waters in routine analysis for custom laboratories.

show abstract

Section: Lod and Loqsupporting

confidence: 81%

Method validation and measurement uncertainty of possible thirty volatile organic compounds (VOCs) presented in the polyethylene present in bottled drinking waters sold in Turkey

Güzel

Canlı

2020

J Anal Sci Technol

View full text Add to dashboard Cite

show abstract

“…Table also present the reported LODs values found in the literature for analysis of VCHCs in water samples when using LLE GC–ECD , P&T GC–MS , DAI–GC–ECD , SPME–GC–ECD , LPME–GC–ECD , static HS–GC–MS , HS‐SDME–GC–MS , HS‐SPME–GC–ECD , HS‐SDME–GC–μECD , HS‐LPME–GC–μECD , HS‐K‐SPME–GC–MS , and HS‐SPME–GC–MS/MS . It is seen in Table that the LODs of VCHCs obtained with the proposed static HS–GC–ECD are superior to those obtained with DAI–GC–ECD as well as with LPME–GC–ECD , static HS–GC–MS , HS‐LPME–GC–μECD , HS‐K‐SPME–GC–MS , and HS‐SPME–GC–MS/MS . In comparison with P&T–GC–MS , HS‐SDME–GC–MS , and HS‐SDME–GC–μECD , the LODs obtained from the static HS–GC–ECD are lower (except for DCM or TCM).…”

Section: Resultsmentioning

confidence: 99%

“…Conventional methods, such as LLE , require the use of large amount of expensive high‐purity organic solvents, which are often hazardous, and is laborious, time‐consuming, and apt to form emulsions. To avoid these drawbacks, several environmentally friendly sample pretreatment techniques, including purge and trap (P&T) , direct aqueous injection (DAI) , SPME , LPME , static headspace (static HS) , headspace solid‐phase dynamic extraction (HS‐SPDE) , headspace solid‐phase microextraction (HS‐SPME) , static headspace knotted hollow fiber microextraction (HS‐K‐HPME) , headspace single drop microextraction (HS‐SDME) , and headspace liquid‐phase microextraction (HS‐LPME) , have been arisen. P&T is the pre‐concentration method for VCHCs from water most frequently used in routine analysis in the USA.…”

Section: Introductionmentioning

confidence: 99%

Determination of volatile chlorinated hydrocarbons in water samples by static headspace gas chromatography with electron capture detection

Guo

et al. 2015

J of Separation Science

View full text Add to dashboard Cite

A simple, efficient, solvent-free, and commercial readily available approach for determination of five volatile chlorinated hydrocarbons in water samples using the static headspace sampling and gas chromatography with electron capture detection has been described. The proposed static headspace sampling method was initially optimized and the optimum experimental conditions found were 10 mL water sample containing 20% w/v sodium chloride placed in a 20 mL vial and stirred at 50ºC for 20 min. The linearity of the method was in the range of 1.2-240 μg/L for dichloromethane, 0.2-40 μg/L for trichloromethane, 0.005-1 μg/L for perchloromethane, 0.025-5 μg/L for trichloroethylene, and 0.01-2 μg/L for perchloroethylene, with coefficients of determination ranging between 0.9979 and 0.9990. The limits of detection were in the low μg/L level, ranging between 0.001 and 0.3 μg/L. The relative recoveries of spiked five volatile chlorinated hydrocarbons with external calibration method at different concentration levels in pure, tap, sea water of Jiaojiang Estuary, and sea water of waters of Xiaomendao were in the range of 91-116, 96-105, 86-112, and 80-111%, respectively, and with relative standard deviations of 1.9-3.6, 2.3-3.5, 1.5-2.7, and 2.3-3.7% (n = 5), respectively. The performance of the proposed method was compared with traditional liquid-liquid extraction on the real water samples (i.e., pure, tap, and sea water, etc.) and comparable efficiencies were obtained. It is concluded that this method can be successfully applied for the determination of volatile chlorinated hydrocarbons in different water samples.

show abstract

“…PT and solid-phase microextraction (SPME) methods are the most chosen analysis and also sample pre-concentration methods on account of gorgeous recoveries for a great quantity of volatile compounds. At the present time, PT method is the most valuable and applicable method for preparing water samples for volatile compound analysis and in addition to this, critical quantification for several volatile compounds in water has been performed by the automatization of PT process fully with GC-MS systems [14][15][16]. The advantage of this system is that it picks up only the volatile analytes of interest by eliminating non-volatile compounds and provides the measurement of low detection limits [10].…”

Section: Introductionmentioning

confidence: 99%

Suda Uçucu Aromatik Hidrokarbonların (UAH’lar) Hassas ve Doğru Analizi için Gaz Kromatografisi Yöntemi Doğrulama Çalışması

Güzel

Canlı

Olgun

2018

Cumhuriyet Science Journal

View full text Add to dashboard Cite

A wide range of chemicals comes to exist at the end of the industrial activities. They could have highly toxic and carcinogenic effects on the human health and water environment. Therefore, these substances, which are listed as prohibited chemicals on national and international lists, must be monitored permanently with regards to environmental and human health both in the water resources and potential receiving waterbodies. The objective of this study was to present the method for the sensitive and accurate determination of some volatile aromatic hydrocarbons (VAHs), including quite dangerous substances such as benzene, toluene, xylenes, styrene and chlorobenzenes by using gas chromatography -mass spectrometry (GC-MS) with purge & trap (PT) process in different water samples. The proposed method was verified with the selectivity, linearity, limits of detection and quantification (LOD and LOQ), precision studies of the method and instrument. All analytes examined in the study were trustworthily measured within the maximum performance limits for PT-GC-MS. The selectivity work was carried out by duplicate analysis of six blank water samples. There is no finding or observation within the interval of the retention time of the analytes in the water samples. The linearity of calibration curves was drawn by analysis of prepared standard solutions at nine concentration levels. The analytical response linearity in the working range can be assessed as an excellent since the correlation coefficients higher than 0.9996 for all analytes. The method accuracy was carried out by doing recovery experiment. Recoveries of analytes have been changed from 88.4 % to 94.6 % and the relative standard deviation (RSD) results were found between 3.52 % and 6.35 %. The applicability of developed method was confirmed by the determination of related analytes in the water samples.Özet. Endüstriyel faaliyetlerin sonucunda çok çeşitli kimyasallar ortaya çıkmaktadır. Bunlar, insan sağlığı ve su ortamı üzerinde oldukça toksik ve kanserojenik etkilere sahip olabilirler. Bu nedenle, ulusal ve uluslararası listelerde yasaklanmış kimyasallar olarak yer alan bu maddeler, hem su kaynakları hem de potansiyel alıcı su ortamlarında çevre ve insan sağlığı açısından sürekli olarak izlenmelidir. Bu çalışmanın amacı, farklı su örneklerinde tasfiye & tutma (PT) işlemi ile gaz kromatografisikütle spektrometresi (GC-MS) kullanılarak benzen, toluen, ksilenler, stiren ve klorobenzenler gibi oldukça tehlikeli maddeler içeren bazı uçucu aromatik hidrokarbonların (UAH'lar) hassas ve doğru tespitine yönelik yöntemi sunmaktır. Önerilen metot, seçicilik, doğrusallık, tespit ve tayin limitleri (LOD ve LOQ), metot ve cihazın kesinlik çalışmaları ile doğrulanmıştır. Çalışmada incelenen tüm analitler, PT-GC-MS için maksimum performans sınırları içinde güvenilir şekilde ölçülmüştür. Seçicilik çalışması, altı boş su örneğinin çift analizi ile gerçekleştirilmiştir. Su örneklerindeki analitlerin alıkonma süreleri arasında herhangi bir bulgu veya gözleme rastlanmamıştır. Kalibrasy...

show abstract

Determination of volatile organic compounds in water using headspace knotted hollow fiber microextraction

Cited by 31 publications

References 36 publications

Method validation and measurement uncertainty of possible thirty volatile organic compounds (VOCs) presented in the polyethylene present in bottled drinking waters sold in Turkey

Method validation and measurement uncertainty of possible thirty volatile organic compounds (VOCs) presented in the polyethylene present in bottled drinking waters sold in Turkey

Determination of volatile chlorinated hydrocarbons in water samples by static headspace gas chromatography with electron capture detection

Suda Uçucu Aromatik Hidrokarbonların (UAH’lar) Hassas ve Doğru Analizi için Gaz Kromatografisi Yöntemi Doğrulama Çalışması

Contact Info

Product

Resources

About