Results 31 to 40 of about 384,770 (213)

Rapid determination of methylmercury in fish tissues

open access: yesCzech Journal of Food Sciences, 2006
The aim of the present study was to develop a rapid and inexpensive method for the determination of methylmercury in fish tissues based on GC/ECD instrumentation.
Petr Maršálek, Zdeňka Svobodová
doaj   +1 more source

Solid-Phase Microextraction and GC-ECD of Benzophenones for Detection of Benzodiazepines in Urine [PDF]

open access: yesJournal of Analytical Toxicology, 1999
Benzodiazepines are common drugs that cause intoxication. Benzodiazepines and their metabolites can be converted by hydrolysis in acid to the corresponding benzophenones, which are easier to be separated from matrices because of their hydrophobic properties.
F, Guan   +6 more
openaire   +2 more sources

Investigation of the occurrence of pesticide residues in rural wells and surface water following application to tobacco</a> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16"><i>Química Nova</i>, 2007 </span><br><span class="r_content">In this work the exposure of wells and surface water to pesticides, commonly used for tobacco cropping, was assessed. Water consumption wells and surface water flows were sampled at different times.</span><br><span class="r_sub"><i>Edson C. Bortoluzzi<span id="ma_3" style="display:none">, Danilo S. Rheinheimer, Celso S. Gonçalves, João B. R. Pellegrini, Aline M. Maroneze, Márcia H. S. Kurz, Nádia M. Bacar, Renato Zanella</span>   <small><a href="#" style="color:#808080;" onClick="return toggle_div(this, 'ma_3')">+7 more</a></small></i></span><br><small><a href="https://doaj.org/article/0f5779d94077400fb943846cc42abd82" target="_blank" rel="nofollow" title="doaj.org/article/0f5779d94077400fb943846cc42abd82">doaj</a> </small>   <div id="more_3" style="display:none"><a href="/sci_redir.php?doi=10.1590%2FS0100-40422007000800014" target="_blank" rel="nofollow">openaccessbutton.org (pdf)</a><br><a href="javascript:navigator.clipboard.writeText('10.1590/S0100-40422007000800014'); alert('Copied the doi');">copy doi</a> <small>(10.1590/S0100-40422007000800014)</small><br></div><small><a href="#" onClick="return toggle_div(this, 'more_3')">+1 more source</a></small><br></div><div class="r"><p class="r_title"><a href="https://doi.org/10.33320/maced.pharm.bull.2025.71.01.005" target="_blank" rel="nofollow">Development and validation of a GC-ECD method for pesticide residue detection in flour</a> <b><a href="https://bulletin.mfd.org.mk/volumes/Volume%2071_1/71_1_005.pdf" target="_blank" rel="nofollow">[PDF]</a></b> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16"><i>Makedonsko Farmacevtski Bilten</i></span><br><span class="r_content">This study aimed to optimize and validate a rapid, reliable and accurate method for quantitative determination of pesticide residues in flour matrix.</span><br><span class="r_sub"><i>Margarita Timofejeva<span id="ma_4" style="display:none">, Anita Najdenkoska, Biljana Bauer</span>   <small><a href="#" style="color:#808080;" onClick="return toggle_div(this, 'ma_4')">+2 more</a></small></i></span><br><small><a href="https://doaj.org/article/1ebdd9b2e09349bebd3f57112574f928" target="_blank" rel="nofollow" title="doaj.org/article/1ebdd9b2e09349bebd3f57112574f928">doaj</a> </small>   <div id="more_4" style="display:none"><a href="/sci_redir.php?doi=10.33320%2Fmaced.pharm.bull.2025.71.01.005" target="_blank" rel="nofollow">openaccessbutton.org (pdf)</a><br><a href="javascript:navigator.clipboard.writeText('10.33320/maced.pharm.bull.2025.71.01.005'); alert('Copied the doi');">copy doi</a> <small>(10.33320/maced.pharm.bull.2025.71.01.005)</small><br></div><small><a href="#" onClick="return toggle_div(this, 'more_4')">+1 more source</a></small><br></div><div class="r"><p class="r_title"><a href="http://www.ijcce.ac.ir/article_10958_d41d8cd98f00b204e9800998ecf8427e.pdf" target="_blank" rel="nofollow">Comparative Gas Chromatography of Halides Using Different Substituted Phenylboronic Acids as Derivatizing Reagents</a> <b><a href="http://www.ijcce.ac.ir/article_10958_d41d8cd98f00b204e9800998ecf8427e.pdf" target="_blank" rel="nofollow">[PDF]</a></b> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16"><i>Iranian Journal of Chemistry & Chemical Engineering</i>, 1992 </span><br><span class="r_content">The GC of halides (chloride, bromide and iodide) using phenylboronic acid (PBA), 4-bromophenylboronic acid (BPBA), 3, 5 bis (trifluoromethyl) phenylboronic acid (FPBA) and 2,4- dichlorophenylboronic acid (CPBA) as derivatizing reagents are compared.</span><br><span class="r_sub"><i>Ali Sarafraz Yazdi, W.I. Stephen</i></span><br><small><a href="https://doaj.org/article/c83a57c415c24f059a32cad572c1e931" target="_blank" rel="nofollow" title="doaj.org/article/c83a57c415c24f059a32cad572c1e931">doaj</a> </small>   <br></div><div class="r"><p class="r_title"><a href="https://doi.org/https://doi.org/10.29321/MAJ.10.100146" target="_blank" rel="nofollow">Persistence and Dissipation of Dichlorvos and Profenofos on Mulberry Leaves</a> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16"><i>Madras Agricultural Journal</i>, 2012 </span><br><span class="r_content">Persistence and dissipation properties of dichlorvos and profenofos in/on mulberry leaves were studied. Dichlorvos (76 WSC) and profenophos (50 EC) were sprayed at recommended dose (2 mL/L) and double the dose (4 mL/L) and leaf samples were drawn at ...</span><br><span class="r_sub"><i>M. Paramasivam<span id="ma_6" style="display:none">, S. Chandrasekaran, P. Karthik, R. Harischandra Naik, P. Thangachamy and C.A. Mahalingam</span>   <small><a href="#" style="color:#808080;" onClick="return toggle_div(this, 'ma_6')">+4 more</a></small></i></span><br><small><a href="https://doaj.org/article/bddcf71df90444578bfe74b36e44d057" target="_blank" rel="nofollow" title="doaj.org/article/bddcf71df90444578bfe74b36e44d057">doaj</a> </small>   <div id="more_6" style="display:none"><a href="/sci_redir.php?doi=https%3A%2F%2Fdoi.org%2F10.29321%2FMAJ.10.100146" target="_blank" rel="nofollow">openaccessbutton.org (pdf)</a><br><a href="javascript:navigator.clipboard.writeText('https://doi.org/10.29321/MAJ.10.100146'); alert('Copied the doi');">copy doi</a> <small>(https://doi.org/10.29321/MAJ.10.100146)</small><br></div><small><a href="#" onClick="return toggle_div(this, 'more_6')">+1 more source</a></small><br></div><div class="r"><p class="r_title"><a href="https://doi.org/10.1515/revac-2022-0034" target="_blank" rel="nofollow">A review of the application of comprehensive two-dimensional gas chromatography MS-based techniques for the analysis of persistent organic pollutants and ultra-trace level of organic pollutants in environmental samples</a> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16"><i>Reviews in Analytical Chemistry</i>, 2022 </span><br><span class="r_content">Analysis of complex samples in environmental matrices poses extreme challenge for analytical chemists as the number of known and unknown compounds are numerous and have varying physical and chemical properties.</span><br><span class="r_sub"><i>Vaye Oliver<span id="ma_7" style="display:none">, Ngumbu Rafael Sarji, Xia Dan</span>   <small><a href="#" style="color:#808080;" onClick="return toggle_div(this, 'ma_7')">+2 more</a></small></i></span><br><small><a href="https://doaj.org/article/e636a805028745c48d409d16f916cf80" target="_blank" rel="nofollow" title="doaj.org/article/e636a805028745c48d409d16f916cf80">doaj</a> </small>   <div id="more_7" style="display:none"><a href="/sci_redir.php?doi=10.1515%2Frevac-2022-0034" target="_blank" rel="nofollow">openaccessbutton.org (pdf)</a><br><a href="javascript:navigator.clipboard.writeText('10.1515/revac-2022-0034'); alert('Copied the doi');">copy doi</a> <small>(10.1515/revac-2022-0034)</small><br></div><small><a href="#" onClick="return toggle_div(this, 'more_7')">+1 more source</a></small><br></div><div class="r"><p class="r_title"><a href="https://doi.org/10.1007/s12161-012-9463-x" target="_blank" rel="nofollow">Optimization of QuEChERS procedure coupled to GC-ECD for organochlorine pesticide determination in carrot samples</a> <b><a href="https://core.ac.uk/download/47138353.pdf" target="_blank" rel="nofollow">[PDF]</a></b> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16">, 2013 </span><br><span class="r_content">An optimised version of the Quick, Easy, Cheap, Effective, Rugged and Safe (QuEChERS) method for simultaneous determination of 14 organochlorine pesticides in carrots was developed using gas chromatography coupled with electron-capture detector (GC ...</span><br><span class="r_sub"><i>Domingues, Valentina F.<span id="ma_8" style="display:none">, Sá, Maria, Domingues, Valentina, Fernandes, Virgínia C., Correia-Sá, Luísa, Delerue-Matos, Cristina, Fernandes, Virginia, Matos, Cristina, Calhau, Conceição</span>   <small><a href="#" style="color:#808080;" onClick="return toggle_div(this, 'ma_8')">+8 more</a></small></i></span><br><small><a href="https://core.ac.uk/works/26795085" target="_blank" rel="nofollow" title="core.ac.uk/works/26795085">core</a> </small>   <div id="more_8" style="display:none"><a href="/sci_redir.php?doi=10.1007%2Fs12161-012-9463-x" target="_blank" rel="nofollow">openaccessbutton.org (pdf)</a><br><a href="javascript:navigator.clipboard.writeText('10.1007/s12161-012-9463-x'); alert('Copied the doi');">copy doi</a> <small>(10.1007/s12161-012-9463-x)</small><br></div><small><a href="#" onClick="return toggle_div(this, 'more_8')">+1 more source</a></small><br></div><div class="r"><p class="r_title"><a href="https://doi.org/10.6084/m9.figshare.3513848.v1" target="_blank" rel="nofollow">Appendix C. Targeted PCB analytes and methods for extraction and analysis of samples by GC-ECD.</a> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16">, 2016 </span><br><span class="r_content">Targeted PCB analytes and methods for extraction and analysis of samples by GC ...</span><br><span class="r_sub"><i>Ryan R. Otter (2470033)<span id="ma_9" style="display:none">, Ken M. Fritz (771624), David M. Walters (1334700)</span>   <small><a href="#" style="color:#808080;" onClick="return toggle_div(this, 'ma_9')">+2 more</a></small></i></span><br><small><a href="https://core.ac.uk/works/48615815" target="_blank" rel="nofollow" title="core.ac.uk/works/48615815">core</a> </small>   <div id="more_9" style="display:none"><a href="/sci_redir.php?doi=10.6084%2Fm9.figshare.3513848.v1" target="_blank" rel="nofollow">openaccessbutton.org (pdf)</a><br><a href="javascript:navigator.clipboard.writeText('10.6084/m9.figshare.3513848.v1'); alert('Copied the doi');">copy doi</a> <small>(10.6084/m9.figshare.3513848.v1)</small><br></div><small><a href="#" onClick="return toggle_div(this, 'more_9')">+1 more source</a></small><br></div><div class="r"><p class="r_title"><a href="https://doi.org/https://doi.org/10.21897/rta.v20i2.756" target="_blank" rel="nofollow">Implementation of the methodology QuEChERS in the residual pesticide analysis in white corn (Zea mays)</a> </p><span class="r_subtitle"><img src="/img/openaccess.ico" alt="open access: yes" title="open access: yes" width="16" height="16"><i>Temas Agrarios</i>, 2015 </span><br><span class="r_content">The use of pesticides on maize crops during and after harvest constitutes a serious health and environmental risk if its prevalence remains during the consumption line.</span><br><span class="r_sub"><i>Martha I. Páez, Jina M. Martínez</i></span><br><small><a href="https://doaj.org/article/3a17d07c6cb44d28823fb21a4f03dec1" target="_blank" rel="nofollow" title="doaj.org/article/3a17d07c6cb44d28823fb21a4f03dec1">doaj</a> </small>   <div id="more_10" style="display:none"><a href="/sci_redir.php?doi=https%3A%2F%2Fdoi.org%2F10.21897%2Frta.v20i2.756" target="_blank" rel="nofollow">openaccessbutton.org (pdf)</a><br><a href="javascript:navigator.clipboard.writeText('https://doi.org/10.21897/rta.v20i2.756'); alert('Copied the doi');">copy doi</a> <small>(https://doi.org/10.21897/rta.v20i2.756)</small><br></div><small><a href="#" onClick="return toggle_div(this, 'more_10')">+1 more source</a></small><br></div><div class="r"><div style="margin-bottom:2px;overflow:hidden"><div style="display: inline-block; float: left; font-size: small; padding-right: 16px; margin-top: -1px; padding-bottom: 1px;"><a href="/q-6._clean_water/" class="suggestion"onclick="show_loader();"><b>6. clean water</b></a><br/><a href="/q-chromatography%2C_gas/" class="suggestion"onclick="show_loader();"><b>chromatography, gas</b></a><br/><a href="/q-3._good_health/" class="suggestion"onclick="show_loader();"><b>3. good health</b></a><br/></div><div style="display: inline-block; float: left; font-size: small; padding-right: 16px; margin-top: -1px; padding-bottom: 1px;"><a href="/q-gas_chromatography/" class="suggestion"onclick="show_loader();"><b>gas chromatography</b></a><br/><a href="/q-pesticides/" class="suggestion"onclick="show_loader();"><b>pesticides</b></a><br/><a href="/q-13._climate_action/" class="suggestion"onclick="show_loader();"><b>13. climate action</b></a><br/></div><div style="display: inline-block; float: left; font-size: small; padding-right: 16px; margin-top: -1px; padding-bottom: 1px;"><a href="/q-2._zero_hunger/" class="suggestion"onclick="show_loader();"><b>2. zero hunger</b></a><br/><a href="/q-quechers/" class="suggestion"onclick="show_loader();"><b>quechers</b></a><br/><a href="/q-mass_spectrometry/" class="suggestion"onclick="show_loader();"><b>mass spectrometry</b></a><br/></div></div></div><div class="pagenav"><a href="/q-gc-ecd/p-3/" rel="nofollow"><b>previous</b></a>   <a href="/q-gc-ecd/p-2/" rel="nofollow">2</a>  <a href="/q-gc-ecd/p-3/" rel="nofollow">3</a>  <b>4</b>  <a href="/q-gc-ecd/p-5/" rel="nofollow">5</a>  <a href="/q-gc-ecd/p-6/" rel="nofollow">6</a>   <a href="/q-gc-ecd/p-5/" id="next" rel="nofollow"><b>next</b></a> </div><br></div> </div> <script>document.getElementById('loadingGif').style.display='none';</script><div style="width: 100%; height: 40px; bottom: 0px; background-color: #f5f5f5;"><div style="padding-left: 15px; padding-top: 10px"> <a href="/" rel="nofollow">Home</a> - <a href="/page-about/" rel="nofollow">About</a> - <a href="/page-disclaimer/" rel="nofollow">Disclaimer</a> - <a href="/page-privacy/" rel="nofollow">Privacy</a> </div></div> <link rel="stylesheet" href="//ajax.googleapis.com/ajax/libs/jqueryui/1.11.4/themes/smoothness/jquery-ui.min.css"/> <script> (function(ss,ex){ window.ldfdr=window.ldfdr||function(){(ldfdr._q=ldfdr._q||[]).push([].slice.call(arguments));}; (function(d,s){ fs=d.getElementsByTagName(s)[0]; function ce(src){ var cs=d.createElement(s); cs.src=src; cs.async=1; fs.parentNode.insertBefore(cs,fs); }; ce('https://sc.lfeeder.com/lftracker_v1_'+ss+(ex?'_'+ex:'')+'.js'); })(document,'script'); })('JMvZ8gvrWA9a2pOd'); </script> </body> </html>