°“√æ—≤π“«‘∏’°“√«‘‡§√“–Àå “√°≈ÿà¡ÕÕ√å°“‚π§≈Õ√’π„πµ—«Õ¬à“ßπÈ” ‚¥¬«‘∏’ micro-extraction Development of Recovery Factors for Analysis of Organochlorine Pesticides in Water Samples by Using a Micro-Extraction Technique Ruchaya Boonyatumanond*
Qualification of organochlorine pesticides by Gas Chromatograph Electron Capture Detector
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Micro-extraction apparatus
°“√«‘ ‡ §√“–Àå “√¶à “ ·¡≈ß°≈ÿà ¡ ÕÕ√å ° “‚π §≈Õ√’π 22 ™π‘¥ „πµ—«Õ¬à“ßπÈ”‰¥â√—∫°“√æ—≤π“«‘∏’ °“√«‘‡§√“–Àå‚¥¬„™â‡∑§π‘§ micro-extraction ‡æ◊ËÕ „Àâ “¡“√∂«‘‡§√“–Àå ‰¥â√«¥‡√Á« ª√–À¬—¥§à“„™â®à“¬ ∑—Èß “√‡§¡’ ·≈–‡§√◊ËÕß·°â« ‚¥¬«‘∏’π’È “¡“√∂„Àâº≈ °“√∑¥ Õ∫∑’Ë ∂Ÿ ° µâ Õ ß‚¥¬°“√∑¥ Õ∫ °“√§«∫§ÿ ¡ §ÿ≥¿“æ §◊Õ ∑”°“√∑¥ Õ∫ recovery πÕ°®“°π—Èπ °“√„™â ‡ ∑§π‘ § °“√ Õ∫‡∑’ ¬ ∫°— ∫ “√¡“µ√∞“π (internal standard) ·≈– recovery factor ‡æ◊ËÕ „ ™â „π°“√§”π«≥„Àâ ‡ °‘ ¥ §«“¡∂Ÿ ° µâ Õ ß¥â « ¬ “√ oxychlordane ·≈– pentachloronitrobenzene „π°“√∑¥≈Õßπ’È „™â gas chromatographic column §◊Õ HP-1 (crosslinked to methyl silicone gum) 50m length x 0.2 mm id x 0.5 µ m film thickness “¡“√∂·¬° “√∑—Èß 22 ™π‘¥ ¿“¬„π
*»Ÿπ¬å«‘®—¬·≈–Ωñ°Õ∫√¡¥â“π ‘Ëß·«¥≈âÕ¡ °√¡ à߇ √‘¡§ÿ≥¿“æ ‘Ëß·«¥≈âÕ¡ ‡∑§‚π∏“π’ µ.§≈ÕßÀâ“ Õ.§≈ÕßÀ≈«ß ®.ª∑ÿ¡∏“π’ 12120 ‚∑√. 0-2577-1136 ‚∑√ “√. 0-2577-1138 Environmental Research and Training Center, Department of Environmental Quality Promotion. Technopolis. Klong 5 Klong Luang, Pathumthani 12120 e-mail: Ruchaya@deqp.go.th