| 001 | 57080 | ||
| 005 | 20180211175451.0 | ||
| 024 | 7 | _ | |2 pmid |a pmid:17540387 |
| 024 | 7 | _ | |2 DOI |a 10.1016/j.chroma.2007.05.038 |
| 024 | 7 | _ | |2 WOS |a WOS:000248107200028 |
| 037 | _ | _ | |a PreJuSER-57080 |
| 041 | _ | _ | |a eng |
| 082 | _ | _ | |a 540 |
| 084 | _ | _ | |2 WoS |a Biochemical Research Methods |
| 084 | _ | _ | |2 WoS |a Chemistry, Analytical |
| 100 | 1 | _ | |a Babay, P. A. |b 0 |0 P:(DE-HGF)0 |
| 245 | _ | _ | |a Column temperature as an active variable in the isocratic, normal-phase high-performance liquid chromatography separation of lipophilic metabolites of nonylphenol ethoxylates |
| 260 | _ | _ | |a New York, NY [u.a.] |b Science Direct |c 2007 |
| 300 | _ | _ | |a 227 - 236 |
| 336 | 7 | _ | |a Journal Article |0 PUB:(DE-HGF)16 |2 PUB:(DE-HGF) |
| 336 | 7 | _ | |a Output Types/Journal article |2 DataCite |
| 336 | 7 | _ | |a Journal Article |0 0 |2 EndNote |
| 336 | 7 | _ | |a ARTICLE |2 BibTeX |
| 336 | 7 | _ | |a JOURNAL_ARTICLE |2 ORCID |
| 336 | 7 | _ | |a article |2 DRIVER |
| 440 | _ | 0 | |a Journal of Chromatography A |x 0021-9673 |0 3154 |v 1157 |
| 500 | _ | _ | |a Record converted from VDB: 12.11.2012 |
| 520 | _ | _ | |a Normal-phase separation of technical grade nonylphenol (t-NP, about 90% 4-nonylphenol), 4-nonylphenol mono-ethoxylate (4-NP1EO) and 4-nonylphenol di-ethoxylate (4-NP2EO) was assessed, with the inclusion of column temperature as an active variable. The compound 2,4,6-trimethylphenol was evaluated for use as internal standard. Isocratic elution with 2-propanol/hexanes mixtures from an amino-silica column and spectrometric UV detection at 277 nm were employed. Technical nonylphenol presented a significant contribution from unknown substances that eluted with retention times similar to that of 4-NP1EO. GC-MS analysis of the unknowns allowed to identify them as isomers of 2-NP. The response of the system to joint variations in flow rate, eluent composition and column temperature was investigated by means of Doehlert statistical experimental design. A model for retention of the analytes as a function of the experimental variables was proposed, and separation selectivity was studied. Selection of the optimal working zone was made through desirability function (D) calculations. Potential co-elution of 2-NP isomers with 4-NP1EO was considered when optimizing the separation. The occurrence of a restricted region of the experimental space where baseline resolution of analytes, associated impurities and internal standard results feasible (D not equal to 0) is apparent. |
| 536 | _ | _ | |a Terrestrische Umwelt |c P24 |2 G:(DE-HGF) |0 G:(DE-Juel1)FUEK407 |x 0 |
| 588 | _ | _ | |a Dataset connected to Web of Science, Pubmed |
| 650 | _ | 2 | |2 MeSH |a Chromatography, High Pressure Liquid: instrumentation |
| 650 | _ | 2 | |2 MeSH |a Ethylene Glycols: isolation & purification |
| 650 | _ | 2 | |2 MeSH |a Ethylene Glycols: metabolism |
| 650 | _ | 2 | |2 MeSH |a Sensitivity and Specificity |
| 650 | _ | 2 | |2 MeSH |a Spectrophotometry, Ultraviolet |
| 650 | _ | 2 | |2 MeSH |a Temperature |
| 650 | _ | 7 | |0 0 |2 NLM Chemicals |a Ethylene Glycols |
| 650 | _ | 7 | |0 27986-36-3 |2 NLM Chemicals |a terics |
| 650 | _ | 7 | |a J |2 WoSType |
| 653 | 2 | 0 | |2 Author |a nonylphenol ethoxylates |
| 653 | 2 | 0 | |2 Author |a lipophilic metabolites |
| 653 | 2 | 0 | |2 Author |a normal-phase HPLC |
| 653 | 2 | 0 | |2 Author |a column temperature |
| 653 | 2 | 0 | |2 Author |a separation selectivity |
| 700 | 1 | _ | |a Gettar, R. T. |b 1 |0 P:(DE-HGF)0 |
| 700 | 1 | _ | |a Magallanes, J.F. |b 2 |0 P:(DE-HGF)0 |
| 700 | 1 | _ | |a Becquart, E.T. |b 3 |0 P:(DE-HGF)0 |
| 700 | 1 | _ | |a Thiele, B. |b 4 |u FZJ |0 P:(DE-Juel1)129410 |
| 700 | 1 | _ | |a Batistoni, D. A. |b 5 |0 P:(DE-HGF)0 |
| 773 | _ | _ | |a 10.1016/j.chroma.2007.05.038 |g Vol. 1157, p. 227 - 236 |p 227 - 236 |q 1157<227 - 236 |0 PERI:(DE-600)1491247-8 |t Journal of chromatography / A |v 1157 |y 2007 |x 0021-9673 |
| 856 | 7 | _ | |u http://dx.doi.org/10.1016/j.chroma.2007.05.038 |
| 909 | C | O | |o oai:juser.fz-juelich.de:57080 |p VDB |
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| 914 | 1 | _ | |y 2007 |
| 915 | _ | _ | |0 StatID:(DE-HGF)0010 |a JCR/ISI refereed |
| 920 | 1 | _ | |k ICG-3 |l Phytosphäre |d 31.10.2010 |g ICG |0 I:(DE-Juel1)ICG-3-20090406 |x 1 |
| 970 | _ | _ | |a VDB:(DE-Juel1)89791 |
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| 980 | _ | _ | |a I:(DE-Juel1)IBG-2-20101118 |
| 980 | _ | _ | |a UNRESTRICTED |
| 981 | _ | _ | |a I:(DE-Juel1)IBG-2-20101118 |
| 981 | _ | _ | |a I:(DE-Juel1)ICG-3-20090406 |
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