Variation in concentration of perfluorooctanoic acid in methanol solutions during storage
•Perfluorooctanoate in methanol solutions decreased with length of storage.•Methyl perfluorooctanoate and methyl formate increased with length of storage.•Methyl perfluorooctanoate increased with increase in methyl formate.•Methyl perfluorooctanoate increased when perfluorooctanoate decreased.•Varia...
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| Veröffentlicht in: | Chemosphere (Oxford) 2014-01, Vol.94, p.116-120 |
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| creator | Hanari, Nobuyasu Itoh, Nobuyasu Ishikawa, Keiichiro Yarita, Takashi Numata, Masahiko |
| description | •Perfluorooctanoate in methanol solutions decreased with length of storage.•Methyl perfluorooctanoate and methyl formate increased with length of storage.•Methyl perfluorooctanoate increased with increase in methyl formate.•Methyl perfluorooctanoate increased when perfluorooctanoate decreased.•Variation in the solutions stored around 5°C was smaller than that at room temp.
Perfluoroalkyl carboxylic acids (PFCAs) including perfluorooctanoic acid (PFOA) have been widely recognized as persistent environmental contaminants. For accurate quantification of PFCAs, their stability in calibration solutions is important because they are criteria of quantification. To examine stability of PFCAs in methanol, we monitored PFOA and its related compounds around 4years. Interestingly, perfluorooctanoate was varied randomly, and methyl perfluorooctanoate (MePFOA) and methyl formate were observed when perfluorooctanoate decreased. Moreover, no detection of both methyl esters was in methanol solutions immediately after preparation. In each of prepared methanol solution of perfluorohexanoic, perfluoroheptanoic, and perfluorononanoic acids, their corresponding methyl esters and methyl formate were observed. Furthermore, MePFOA was observed even in the solutions stored around 4months and thereafter MePFOA increased with increase in methyl formate. Therefore, PFCAs including PFOA should be used immediately after preparation when methanol is used as a solvent. |
| doi_str_mv | 10.1016/j.chemosphere.2013.09.040 |
| format | Article |
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Perfluoroalkyl carboxylic acids (PFCAs) including perfluorooctanoic acid (PFOA) have been widely recognized as persistent environmental contaminants. For accurate quantification of PFCAs, their stability in calibration solutions is important because they are criteria of quantification. To examine stability of PFCAs in methanol, we monitored PFOA and its related compounds around 4years. Interestingly, perfluorooctanoate was varied randomly, and methyl perfluorooctanoate (MePFOA) and methyl formate were observed when perfluorooctanoate decreased. Moreover, no detection of both methyl esters was in methanol solutions immediately after preparation. In each of prepared methanol solution of perfluorohexanoic, perfluoroheptanoic, and perfluorononanoic acids, their corresponding methyl esters and methyl formate were observed. Furthermore, MePFOA was observed even in the solutions stored around 4months and thereafter MePFOA increased with increase in methyl formate. Therefore, PFCAs including PFOA should be used immediately after preparation when methanol is used as a solvent.</description><identifier>ISSN: 0045-6535</identifier><identifier>EISSN: 1879-1298</identifier><identifier>DOI: 10.1016/j.chemosphere.2013.09.040</identifier><identifier>PMID: 24139159</identifier><identifier>CODEN: CMSHAF</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Applied sciences ; Caprylates - analysis ; Caprylates - chemistry ; Chemical Fractionation - methods ; Chemistry ; Environmental Monitoring ; Exact sciences and technology ; Fluorocarbons - analysis ; Fluorocarbons - chemistry ; General and physical chemistry ; Global environmental pollution ; Methanol - chemistry ; Methanol solution ; Methyl formate ; Methyl perfluorooctanoate (MePFOA) ; Models, Chemical ; Perfluorooctanoate ; Perfluorooctanoic acid (PFOA) ; Pollution ; Solution properties ; Solutions ; Solutions - chemistry ; Storage</subject><ispartof>Chemosphere (Oxford), 2014-01, Vol.94, p.116-120</ispartof><rights>2013 Elsevier Ltd</rights><rights>2015 INIST-CNRS</rights><rights>Copyright © 2013 Elsevier Ltd. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c407t-51007d0b25874bea30b9576de3d3751e7cae48067e8cbf837aba93cb280257d53</citedby><cites>FETCH-LOGICAL-c407t-51007d0b25874bea30b9576de3d3751e7cae48067e8cbf837aba93cb280257d53</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.chemosphere.2013.09.040$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,4024,27923,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=28079099$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/24139159$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Hanari, Nobuyasu</creatorcontrib><creatorcontrib>Itoh, Nobuyasu</creatorcontrib><creatorcontrib>Ishikawa, Keiichiro</creatorcontrib><creatorcontrib>Yarita, Takashi</creatorcontrib><creatorcontrib>Numata, Masahiko</creatorcontrib><title>Variation in concentration of perfluorooctanoic acid in methanol solutions during storage</title><title>Chemosphere (Oxford)</title><addtitle>Chemosphere</addtitle><description>•Perfluorooctanoate in methanol solutions decreased with length of storage.•Methyl perfluorooctanoate and methyl formate increased with length of storage.•Methyl perfluorooctanoate increased with increase in methyl formate.•Methyl perfluorooctanoate increased when perfluorooctanoate decreased.•Variation in the solutions stored around 5°C was smaller than that at room temp.
Perfluoroalkyl carboxylic acids (PFCAs) including perfluorooctanoic acid (PFOA) have been widely recognized as persistent environmental contaminants. For accurate quantification of PFCAs, their stability in calibration solutions is important because they are criteria of quantification. To examine stability of PFCAs in methanol, we monitored PFOA and its related compounds around 4years. Interestingly, perfluorooctanoate was varied randomly, and methyl perfluorooctanoate (MePFOA) and methyl formate were observed when perfluorooctanoate decreased. Moreover, no detection of both methyl esters was in methanol solutions immediately after preparation. In each of prepared methanol solution of perfluorohexanoic, perfluoroheptanoic, and perfluorononanoic acids, their corresponding methyl esters and methyl formate were observed. Furthermore, MePFOA was observed even in the solutions stored around 4months and thereafter MePFOA increased with increase in methyl formate. Therefore, PFCAs including PFOA should be used immediately after preparation when methanol is used as a solvent.</description><subject>Applied sciences</subject><subject>Caprylates - analysis</subject><subject>Caprylates - chemistry</subject><subject>Chemical Fractionation - methods</subject><subject>Chemistry</subject><subject>Environmental Monitoring</subject><subject>Exact sciences and technology</subject><subject>Fluorocarbons - analysis</subject><subject>Fluorocarbons - chemistry</subject><subject>General and physical chemistry</subject><subject>Global environmental pollution</subject><subject>Methanol - chemistry</subject><subject>Methanol solution</subject><subject>Methyl formate</subject><subject>Methyl perfluorooctanoate (MePFOA)</subject><subject>Models, Chemical</subject><subject>Perfluorooctanoate</subject><subject>Perfluorooctanoic acid (PFOA)</subject><subject>Pollution</subject><subject>Solution properties</subject><subject>Solutions</subject><subject>Solutions - chemistry</subject><subject>Storage</subject><issn>0045-6535</issn><issn>1879-1298</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkMFq3DAQhkVp6G63fYXiHAq92BlZ1ko6hiVpCwu5JIGchCyNd7XY1layA3n72Oy2zTGngZ_vnxk-Qi4pFBTo-upQ2D12IR33GLEogbICVAEVfCBLKoXKaankR7IEqHi-5owvyOeUDgBTmatPZFFWlCnK1ZI8PZrozeBDn_k-s6G32A_xFIQmO2Js2jHEEOxg-uBtZqx3M9rhsJ-SNkuhHWc8ZW6Mvt9laQjR7PALuWhMm_Drea7Iw-3N_eZXvr37-Xtzvc1tBWLIOQUQDuqSS1HVaBjUiou1Q-aY4BSFNVhJWAuUtm4kE6Y2itm6lFBy4ThbkR-nvccY_oyYBt35ZLFtTY9hTJpWXFLJZTmj6oTaGFKK2Ohj9J2JL5qCns3qg35jVs9mNSg9mZ26385nxrpD96_5V-UEfD8DJlnTNtH01qf_nAShQM3c5sThJOXZY9TJepy8Ox_RDtoF_453XgGWIp6X</recordid><startdate>201401</startdate><enddate>201401</enddate><creator>Hanari, Nobuyasu</creator><creator>Itoh, Nobuyasu</creator><creator>Ishikawa, Keiichiro</creator><creator>Yarita, Takashi</creator><creator>Numata, Masahiko</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>201401</creationdate><title>Variation in concentration of perfluorooctanoic acid in methanol solutions during storage</title><author>Hanari, Nobuyasu ; Itoh, Nobuyasu ; Ishikawa, Keiichiro ; Yarita, Takashi ; Numata, Masahiko</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c407t-51007d0b25874bea30b9576de3d3751e7cae48067e8cbf837aba93cb280257d53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Applied sciences</topic><topic>Caprylates - analysis</topic><topic>Caprylates - chemistry</topic><topic>Chemical Fractionation - methods</topic><topic>Chemistry</topic><topic>Environmental Monitoring</topic><topic>Exact sciences and technology</topic><topic>Fluorocarbons - analysis</topic><topic>Fluorocarbons - chemistry</topic><topic>General and physical chemistry</topic><topic>Global environmental pollution</topic><topic>Methanol - chemistry</topic><topic>Methanol solution</topic><topic>Methyl formate</topic><topic>Methyl perfluorooctanoate (MePFOA)</topic><topic>Models, Chemical</topic><topic>Perfluorooctanoate</topic><topic>Perfluorooctanoic acid (PFOA)</topic><topic>Pollution</topic><topic>Solution properties</topic><topic>Solutions</topic><topic>Solutions - chemistry</topic><topic>Storage</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hanari, Nobuyasu</creatorcontrib><creatorcontrib>Itoh, Nobuyasu</creatorcontrib><creatorcontrib>Ishikawa, Keiichiro</creatorcontrib><creatorcontrib>Yarita, Takashi</creatorcontrib><creatorcontrib>Numata, Masahiko</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Chemosphere (Oxford)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hanari, Nobuyasu</au><au>Itoh, Nobuyasu</au><au>Ishikawa, Keiichiro</au><au>Yarita, Takashi</au><au>Numata, Masahiko</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Variation in concentration of perfluorooctanoic acid in methanol solutions during storage</atitle><jtitle>Chemosphere (Oxford)</jtitle><addtitle>Chemosphere</addtitle><date>2014-01</date><risdate>2014</risdate><volume>94</volume><spage>116</spage><epage>120</epage><pages>116-120</pages><issn>0045-6535</issn><eissn>1879-1298</eissn><coden>CMSHAF</coden><abstract>•Perfluorooctanoate in methanol solutions decreased with length of storage.•Methyl perfluorooctanoate and methyl formate increased with length of storage.•Methyl perfluorooctanoate increased with increase in methyl formate.•Methyl perfluorooctanoate increased when perfluorooctanoate decreased.•Variation in the solutions stored around 5°C was smaller than that at room temp.
Perfluoroalkyl carboxylic acids (PFCAs) including perfluorooctanoic acid (PFOA) have been widely recognized as persistent environmental contaminants. For accurate quantification of PFCAs, their stability in calibration solutions is important because they are criteria of quantification. To examine stability of PFCAs in methanol, we monitored PFOA and its related compounds around 4years. Interestingly, perfluorooctanoate was varied randomly, and methyl perfluorooctanoate (MePFOA) and methyl formate were observed when perfluorooctanoate decreased. Moreover, no detection of both methyl esters was in methanol solutions immediately after preparation. In each of prepared methanol solution of perfluorohexanoic, perfluoroheptanoic, and perfluorononanoic acids, their corresponding methyl esters and methyl formate were observed. Furthermore, MePFOA was observed even in the solutions stored around 4months and thereafter MePFOA increased with increase in methyl formate. Therefore, PFCAs including PFOA should be used immediately after preparation when methanol is used as a solvent.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><pmid>24139159</pmid><doi>10.1016/j.chemosphere.2013.09.040</doi><tpages>5</tpages></addata></record> |
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| subjects | Applied sciences Caprylates - analysis Caprylates - chemistry Chemical Fractionation - methods Chemistry Environmental Monitoring Exact sciences and technology Fluorocarbons - analysis Fluorocarbons - chemistry General and physical chemistry Global environmental pollution Methanol - chemistry Methanol solution Methyl formate Methyl perfluorooctanoate (MePFOA) Models, Chemical Perfluorooctanoate Perfluorooctanoic acid (PFOA) Pollution Solution properties Solutions Solutions - chemistry Storage |
| title | Variation in concentration of perfluorooctanoic acid in methanol solutions during storage |
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