Determination of tyrosine through a FIA-direct chemiluminescence procedure
A new FI-direct chemiluminescence method is proposed for the determination of tyrosine, based on the oxidation of the amino acid by K 3Fe(CN) 6 in potassium hydroxide medium, at room temperature and enhanced by the presence of β-cyclodextrin and formic acid. The dynamic range was linear over the ran...
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| Veröffentlicht in: | Talanta (Oxford) 2003-06, Vol.60 (2), p.369-376 |
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| creator | Sanfeliu Alonso, M.C. Lahuerta Zamora, L. Martı́nez Calatayud, J. |
| description | A new FI-direct chemiluminescence method is proposed for the determination of tyrosine, based on the oxidation of the amino acid by K
3Fe(CN)
6 in potassium hydroxide medium, at room temperature and enhanced by the presence of β-cyclodextrin and formic acid. The dynamic range was linear over the range 1.0–10.0 mg
l
−1. A large study of the influence of foreign compounds was performed, including amino acids; and, the method showed high selectivity. The reproducibility between days resulted in a rsd (in slope%) of 4.8 and the repeatability with a rsd (
n=50, 10.0 mg
l
−1) of 3.1%, the LOD (
s/
n=3) was 50 μg
l
−1 and sample throughput 98 h
−1. |
| doi_str_mv | 10.1016/S0039-9140(03)00099-7 |
| format | Article |
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3Fe(CN)
6 in potassium hydroxide medium, at room temperature and enhanced by the presence of β-cyclodextrin and formic acid. The dynamic range was linear over the range 1.0–10.0 mg
l
−1. A large study of the influence of foreign compounds was performed, including amino acids; and, the method showed high selectivity. The reproducibility between days resulted in a rsd (in slope%) of 4.8 and the repeatability with a rsd (
n=50, 10.0 mg
l
−1) of 3.1%, the LOD (
s/
n=3) was 50 μg
l
−1 and sample throughput 98 h
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3Fe(CN)
6 in potassium hydroxide medium, at room temperature and enhanced by the presence of β-cyclodextrin and formic acid. The dynamic range was linear over the range 1.0–10.0 mg
l
−1. A large study of the influence of foreign compounds was performed, including amino acids; and, the method showed high selectivity. The reproducibility between days resulted in a rsd (in slope%) of 4.8 and the repeatability with a rsd (
n=50, 10.0 mg
l
−1) of 3.1%, the LOD (
s/
n=3) was 50 μg
l
−1 and sample throughput 98 h
−1.</description><subject>Analysis</subject><subject>Biological and medical sciences</subject><subject>Chemiluminescence</subject><subject>Continuous-flow</subject><subject>General pharmacology</subject><subject>Medical sciences</subject><subject>Pharmaceuticals</subject><subject>Pharmacology. Drug treatments</subject><subject>Tyrosine</subject><issn>0039-9140</issn><issn>1873-3573</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><recordid>eNqFkMtOwzAQRS0EoqXwCaBskGARGHfiJF6hijdCYgGsLeOMqVEexU6Q-HtcWtElK0vjc-dxGDvkcMaB5-fPAChTyTM4ATwFACnTYouNeVlgiqLAbTb-Q0ZsL4SPCE0RcJeNeClzCUKO2cMV9eQb1-redW3S2aT_9l1wLSX93HfD-zzRyc39LK2cJ9MnZk6Nq4cYoGCoNZQsfGeoGjztsx2r60AH63fCXm-uXy7v0sen2_vL2WNqMiH7tBJvKMtMY8lzDdzmaCl-aGPNFPMqg0raDKUQBZRoecHJQg5ZXggwHGNtwk5WfePkz4FCrxoXd6lr3VI3BMVRymmOQsiIihVq4k3Bk1UL7xrtvxUHtdSofjWqpSMFqH41qiLmjtYjhreGqk1q7S0Cx2tAB6Nr63VrXNhwWVkWQkLkLlYcRSFfjrwKxi21rXSqqnP_rPIDwMGNqQ</recordid><startdate>20030613</startdate><enddate>20030613</enddate><creator>Sanfeliu Alonso, M.C.</creator><creator>Lahuerta Zamora, L.</creator><creator>Martı́nez Calatayud, J.</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>IQODW</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20030613</creationdate><title>Determination of tyrosine through a FIA-direct chemiluminescence procedure</title><author>Sanfeliu Alonso, M.C. ; Lahuerta Zamora, L. ; Martı́nez Calatayud, J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c459t-d5b3984a3816a01f63fe459acfc236d40d9f439557083f171ef06046750c13083</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>Analysis</topic><topic>Biological and medical sciences</topic><topic>Chemiluminescence</topic><topic>Continuous-flow</topic><topic>General pharmacology</topic><topic>Medical sciences</topic><topic>Pharmaceuticals</topic><topic>Pharmacology. Drug treatments</topic><topic>Tyrosine</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sanfeliu Alonso, M.C.</creatorcontrib><creatorcontrib>Lahuerta Zamora, L.</creatorcontrib><creatorcontrib>Martı́nez Calatayud, J.</creatorcontrib><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Talanta (Oxford)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sanfeliu Alonso, M.C.</au><au>Lahuerta Zamora, L.</au><au>Martı́nez Calatayud, J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Determination of tyrosine through a FIA-direct chemiluminescence procedure</atitle><jtitle>Talanta (Oxford)</jtitle><addtitle>Talanta</addtitle><date>2003-06-13</date><risdate>2003</risdate><volume>60</volume><issue>2</issue><spage>369</spage><epage>376</epage><pages>369-376</pages><issn>0039-9140</issn><eissn>1873-3573</eissn><coden>TLNTA2</coden><abstract>A new FI-direct chemiluminescence method is proposed for the determination of tyrosine, based on the oxidation of the amino acid by K
3Fe(CN)
6 in potassium hydroxide medium, at room temperature and enhanced by the presence of β-cyclodextrin and formic acid. The dynamic range was linear over the range 1.0–10.0 mg
l
−1. A large study of the influence of foreign compounds was performed, including amino acids; and, the method showed high selectivity. The reproducibility between days resulted in a rsd (in slope%) of 4.8 and the repeatability with a rsd (
n=50, 10.0 mg
l
−1) of 3.1%, the LOD (
s/
n=3) was 50 μg
l
−1 and sample throughput 98 h
−1.</abstract><cop>Amsterdam</cop><cop>Oxford</cop><pub>Elsevier B.V</pub><pmid>18969059</pmid><doi>10.1016/S0039-9140(03)00099-7</doi><tpages>8</tpages></addata></record> |
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| ispartof | Talanta (Oxford), 2003-06, Vol.60 (2), p.369-376 |
| issn | 0039-9140 1873-3573 |
| language | eng |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Analysis Biological and medical sciences Chemiluminescence Continuous-flow General pharmacology Medical sciences Pharmaceuticals Pharmacology. Drug treatments Tyrosine |
| title | Determination of tyrosine through a FIA-direct chemiluminescence procedure |
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