Item talk:Q309473
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{
"USGS Publications Warehouse": { "@context": "https://schema.org", "@type": "Article", "additionalType": "Journal Article", "name": "Isomer-specific determination of 4-nonylphenols using comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry", "identifier": [ { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse IndexID", "value": "70033924", "url": "https://pubs.usgs.gov/publication/70033924" }, { "@type": "PropertyValue", "propertyID": "USGS Publications Warehouse Internal ID", "value": 70033924 }, { "@type": "PropertyValue", "propertyID": "DOI", "value": "10.1021/es902622r", "url": "https://doi.org/10.1021/es902622r" }, { "@type": "PropertyValue", "propertyID": "ISSN", "value": "0013936X" } ], "journal": { "@type": "Periodical", "name": "Environmental Science & Technology", "volumeNumber": "43", "issueNumber": "24" }, "inLanguage": "en", "isPartOf": [ { "@type": "CreativeWorkSeries", "name": "Environmental Science & Technology" } ], "datePublished": "2009", "dateModified": "2018-10-12", "abstract": "Technical nonylphenol (tNP), used for industrial production of nonylphenol polyethoxylate surfactants, is a complex mixture of C3\u221210-phenols. The major components, 4-nonylphenols, are weak endocrine disruptors whose estrogenicities vary according to the structure of the branched nonyl group. Thus, accurate risk assessment requires isomer-specific determination of 4-NPs. Comprehensive two-dimensional gas chromatography/time-of-flight mass spectrometry (GC \u00d7 GC/ToFMS) was used to characterize tNP samples obtained from seven commercial suppliers. Under optimal chromatographic conditions, 153\u2212204 alkylphenol peaks, 59\u221266 of which were identified as 4-NPs, were detected. The 4-NPs comprised \u223c86\u221294% of tNP, with 2-NPs and decylphenols making up \u223c2\u22129% and \u223c2\u22125%, respectively. The tNP products were analyzed for eight synthetic 4-NP isomers, and results were compared with published data based on GC/MS analysis. Significant differences were found among the products and between two samples from a single supplier. The enhanced resolution of GC \u00d7 GC coupled with fast mass spectral data acquisition by ToFMS facilitated identification of all major 4-NP isomers and a number of previously unrecognized components. Analysis of tNP altered by the bacterium,\u00a0Sphingobium xenophagum\u00a0Bayram, revealed several persistent 4-NPs whose structures and estrogenicities are presently unknown. The potential of this technology for isomer-specific determination of 4-NP isomers in environmental matrices is demonstrated using samples of wastewater-contaminated groundwater and municipal wastewater.", "description": "8 p.", "publisher": { "@type": "Organization", "name": "ACS" }, "author": [ { "@type": "Person", "name": "Kohler, H.-P.E.", "givenName": "H.-P.E.", "familyName": "Kohler" }, { "@type": "Person", "name": "Frysinger, G.S.", "givenName": "G.S.", "familyName": "Frysinger" }, { "@type": "Person", "name": "Gabriel, F.L.P.", "givenName": "F.L.P.", "familyName": "Gabriel" }, { "@type": "Person", "name": "Giger, W.", "givenName": "W.", "familyName": "Giger" }, { "@type": "Person", "name": "Barber, L. B.", "givenName": "L. B.", "familyName": "Barber" }, { "@type": "Person", "name": "Eganhouse, R.P.", "givenName": "R.P.", "familyName": "Eganhouse" }, { "@type": "Person", "name": "Pontolillo, J.", "givenName": "J.", "familyName": "Pontolillo" }, { "@type": "Person", "name": "Gaines, R.B.", "givenName": "R.B.", "familyName": "Gaines" } ], "funder": [ { "@type": "Organization", "name": "Toxic Substances Hydrology Program", "url": null } ] }, "OpenAlex": { "_id": "https://openalex.org/w2073226590", "abstract_inverted_index": { "Technical": [ 0 ], "nonylphenol": [ 1, 8 ], "(tNP),": [ 2 ], "used": [ 3, 56 ], "for": [ 4, 106, 193 ], "industrial": [ 5 ], "production": [ 6 ], "of": [ 7, 15, 32, 44, 74, 87, 140, 155, 163, 168, 190, 196, 206 ], "polyethoxylate": [ 9 ], "surfactants,": [ 10 ], "is": [ 11, 202 ], "a": [ 12, 134, 161 ], "complex": [ 13 ], "mixture": [ 14 ], "C(3-10)-phenols.": [ 16 ], "The": [ 17, 82, 101, 137, 188 ], "major": [ 18, 157 ], "components,": [ 19 ], "4-nonylphenols,": [ 20 ], "are": [ 21, 185 ], "weak": [ 22 ], "endocrine": [ 23 ], "disruptors": [ 24 ], "whose": [ 25, 181 ], "estrogenicities": [ 26, 184 ], "vary": [ 27 ], "according": [ 28 ], "to": [ 29, 57 ], "the": [ 30, 33, 127, 172 ], "structure": [ 31 ], "branched": [ 34 ], "nonyl": [ 35 ], "group.": [ 36 ], "Thus,": [ 37 ], "accurate": [ 38 ], "risk": [ 39 ], "assessment": [ 40 ], "requires": [ 41 ], "isomer-specific": [ 42, 194 ], "determination": [ 43, 195 ], "4-NPs.": [ 45 ], "Comprehensive": [ 46 ], "two-dimensional": [ 47 ], "gas": [ 48 ], "chromatography/time-of-flight": [ 49 ], "mass": [ 50, 147 ], "spectrometry": [ 51 ], "(GC": [ 52 ], "x": [ 53, 142 ], "GC/ToFMS)": [ 54 ], "was": [ 55 ], "characterize": [ 58 ], "tNP": [ 59, 102, 169 ], "samples": [ 60, 132, 205 ], "obtained": [ 61 ], "from": [ 62, 133 ], "seven": [ 63 ], "commercial": [ 64 ], "suppliers.": [ 65 ], "Under": [ 66 ], "optimal": [ 67 ], "chromatographic": [ 68 ], "conditions,": [ 69 ], "153-204": [ 70 ], "alkylphenol": [ 71 ], "peaks,": [ 72 ], "59-66": [ 73 ], "which": [ 75 ], "were": [ 76, 80, 104, 113, 124 ], "identified": [ 77 ], "as": [ 78 ], "4-NPs,": [ 79 ], "detected.": [ 81 ], "4-NPs": [ 83, 180 ], "comprised": [ 84 ], "approximately": [ 85, 95, 98 ], "86-94%": [ 86 ], "tNP,": [ 88 ], "with": [ 89, 115, 145 ], "2-NPs": [ 90 ], "and": [ 91, 97, 111, 129, 160, 183, 209 ], "decylphenols": [ 92 ], "making": [ 93 ], "up": [ 94 ], "2-9%": [ 96 ], "2-5%,": [ 99 ], "respectively.": [ 100 ], "products": [ 103, 128 ], "analyzed": [ 105 ], "eight": [ 107 ], "synthetic": [ 108 ], "4-NP": [ 109, 158, 197 ], "isomers,": [ 110 ], "results": [ 112 ], "compared": [ 114 ], "published": [ 116 ], "data": [ 117, 149 ], "based": [ 118 ], "on": [ 119 ], "GC/MS": [ 120 ], "analysis.": [ 121 ], "Significant": [ 122 ], "differences": [ 123 ], "found": [ 125 ], "among": [ 126 ], "between": [ 130 ], "two": [ 131 ], "single": [ 135 ], "supplier.": [ 136 ], "enhanced": [ 138 ], "resolution": [ 139 ], "GC": [ 141, 143 ], "coupled": [ 144 ], "fast": [ 146 ], "spectral": [ 148 ], "acquisition": [ 150 ], "by": [ 151, 171 ], "ToFMS": [ 152 ], "facilitated": [ 153 ], "identification": [ 154 ], "all": [ 156 ], "isomers": [ 159, 198 ], "number": [ 162 ], "previously": [ 164 ], "unrecognized": [ 165 ], "components.": [ 166 ], "Analysis": [ 167 ], "altered": [ 170 ], "bacterium,": [ 173 ], "Sphingobium": [ 174 ], "xenophagum": [ 175 ], "Bayram,": [ 176 ], "revealed": [ 177 ], "several": [ 178 ], "persistent": [ 179 ], "structures": [ 182 ], "presently": [ 186 ], "unknown.": [ 187 ], "potential": [ 189 ], "this": [ 191 ], "technology": [ 192 ], "in": [ 199 ], "environmental": [ 200 ], "matrices": [ 201 ], "demonstrated": [ 203 ], "using": [ 204 ], "wastewater-contaminated": [ 207 ], "groundwater": [ 208 ], "municipal": [ 210 ], "wastewater.": [ 211 ] }, "apc_list": null, "apc_paid": null, "authorships": [ { "author_position": "first", "author": { "id": "https://openalex.org/A5030690376", "display_name": "Robert P. 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Barber", "orcid": "https://orcid.org/0000-0002-0561-0831" }, "institutions": [ { "id": "https://openalex.org/I186274478", "display_name": "United States Coast Guard Academy", "ror": "https://ror.org/01y922f71", "country_code": "US", "type": "education", "lineage": [ "https://openalex.org/I186274478" ] }, { "id": "https://openalex.org/I63664421", "display_name": "Swiss Federal Institute of Aquatic Science and Technology", "ror": "https://ror.org/00pc48d59", "country_code": "CH", "type": "facility", "lineage": [ "https://openalex.org/I2799323385", "https://openalex.org/I63664421" ] }, { "id": "https://openalex.org/I1286329397", "display_name": "United States Geological Survey", "ror": "https://ror.org/035a68863", "country_code": "US", "type": "government", "lineage": [ "https://openalex.org/I1286329397", "https://openalex.org/I1335927249" ] } ], "countries": [ "CH", "US" ], "is_corresponding": false, "raw_author_name": "Larry B. 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