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Article: Determination of total organic carbon in water by thermal combustion-ion chromatography

TitleDetermination of total organic carbon in water by thermal combustion-ion chromatography
Authors
Issue Date1996
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/ac
Citation
Analytical Chemistry, 1996, v. 68 n. 13, p. 2186-2190 How to Cite?
AbstractA sensitive method for determining total organic carbon at microgram per liter levels in industrial, environmental, and drinking waters by thermal combustion ion chromatography was developed using tube furnace and readily accessable HPLC equipment. To achieve complete oxidation, persulfate (0.25%) was added to oxidize nonvolatile organic compounds in solution and cupric oxide heated at 900 °C to convert volatile organic compounds to CO2, which was scrubbed in a 20 mL solution of 50 mM KOH with 10 drops of butanol added. The carbonate anion obtained was determined by nonsuppressed ion chromatography using 0.6 mM potassium hydrogen phthalate (KHP) as the eluent. Both surfactants and volatile and nonvolatile organic compounds commonly found in environmental waters give highly repeatable recoveries close to 100%. The detection limit (S/N=2) and linear range for a 1 L water sample are 2 μg of C L-1 and 10-2500 μg of C L-1, respectively, and they can be adjusted using samples ranging from 100 mL to 2 L. Good repeatablity (RSD less than 10%) and close to 100% recoveries were obtained for KHP added to real samples such as deionized, mineral, tap, and river water and seawater. Compared with the ASTM D2579 method, the method developed is 3 orders of magnitude more sensitive, more accurate, and reliable in determining samples with low total organic carbon values and more flexible in adjusting the linear range and sensitivity using variable sample sizes.
Persistent Identifierhttp://hdl.handle.net/10722/69677
ISSN
2015 Impact Factor: 5.886
2015 SCImago Journal Rankings: 2.369
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorFung, YSen_HK
dc.contributor.authorWu, Zen_HK
dc.contributor.authorDao, KLen_HK
dc.date.accessioned2010-09-06T06:15:50Z-
dc.date.available2010-09-06T06:15:50Z-
dc.date.issued1996en_HK
dc.identifier.citationAnalytical Chemistry, 1996, v. 68 n. 13, p. 2186-2190en_HK
dc.identifier.issn0003-2700en_HK
dc.identifier.urihttp://hdl.handle.net/10722/69677-
dc.description.abstractA sensitive method for determining total organic carbon at microgram per liter levels in industrial, environmental, and drinking waters by thermal combustion ion chromatography was developed using tube furnace and readily accessable HPLC equipment. To achieve complete oxidation, persulfate (0.25%) was added to oxidize nonvolatile organic compounds in solution and cupric oxide heated at 900 °C to convert volatile organic compounds to CO2, which was scrubbed in a 20 mL solution of 50 mM KOH with 10 drops of butanol added. The carbonate anion obtained was determined by nonsuppressed ion chromatography using 0.6 mM potassium hydrogen phthalate (KHP) as the eluent. Both surfactants and volatile and nonvolatile organic compounds commonly found in environmental waters give highly repeatable recoveries close to 100%. The detection limit (S/N=2) and linear range for a 1 L water sample are 2 μg of C L-1 and 10-2500 μg of C L-1, respectively, and they can be adjusted using samples ranging from 100 mL to 2 L. Good repeatablity (RSD less than 10%) and close to 100% recoveries were obtained for KHP added to real samples such as deionized, mineral, tap, and river water and seawater. Compared with the ASTM D2579 method, the method developed is 3 orders of magnitude more sensitive, more accurate, and reliable in determining samples with low total organic carbon values and more flexible in adjusting the linear range and sensitivity using variable sample sizes.en_HK
dc.languageengen_HK
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/acen_HK
dc.relation.ispartofAnalytical Chemistryen_HK
dc.titleDetermination of total organic carbon in water by thermal combustion-ion chromatographyen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0003-2700&volume=68&issue=13&spage=2186&epage=2190&date=1996&atitle=Determination+of+total+organic+carbon+in+water+by+thermal+combustion-ion+chromatographyen_HK
dc.identifier.emailFung, YS:ysfung@hku.hken_HK
dc.identifier.authorityFung, YS=rp00697en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/ac951146x-
dc.identifier.pmid21619304-
dc.identifier.scopuseid_2-s2.0-0030181306en_HK
dc.identifier.hkuros22166en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0030181306&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume68en_HK
dc.identifier.issue13en_HK
dc.identifier.spage2186en_HK
dc.identifier.epage2190en_HK
dc.identifier.isiWOS:A1996UW36700036-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridFung, YS=13309754700en_HK
dc.identifier.scopusauthoridWu, Z=7501409490en_HK
dc.identifier.scopusauthoridDao, KL=7006126314en_HK

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