نوع مقاله : مقاله پژوهشی کامل
نویسنده
10.30473/ijac.2025.76092.1327
چکیده
در کلرزنی آب برای حذف عوامل بیماریزا، تریهالومتانها (THMs) از جمله محصولات جانبی سرطانزای مهم کلرزنی آب آشامیدنی هستند. ابزار اندازهگیری مرسوم برای این ترکیبات، دستگاه GC با آشکارساز ECD یا دستگاه GC/MS است. از GC-ECD یا GC/MS برای آنالیز THMها در مقیاس میکروگرم در لیتر استفاده میشود. خرید آشکارساز ECD بخاطر تحریم های بین المللی آسان یا مقرون به صرفه نیست. این مقاله یک روش تغلیظ جدید با استفاده از تکنیک فضای فوقانی در دستگاه GC- FID برای اندازهگیری غلظت THMها معرفی میکند. در این روش، چهار ترکیب، کلروفر (CHCl3)، دی-برموکلرومتان (CHClBr2)، برومودیکلرومتان (CHCl2Br) و بروموفرم (CHBr3)، پس از اندازهگیری در مقیاس میکروگرم در لیتر، روی یک نمودار کالیبراسیون 5 نقطهای رسم میشوند. این روش که در آزمایشگاه طراحی شده است، میتواند برای اندازهگیری غلظت و آنالیز دادهها در آزمایشگاههای آب و فاضلاب، محیط زیست، نفت، پتروشیمی و غیره مورد استفاده قرار گیرد. دقت بالای روش (میکروگرم بر لیتر) از ویژگیهای اصلی این روش است. در اینجا، روش طراحی و مزایای این روش با نمودارها و جداول ارائه شده است.
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