دورية أكاديمية
Techniques for quantification of organochlorine pesticides from a validated method by using gas chromatography-electron capture detector
العنوان: | Techniques for quantification of organochlorine pesticides from a validated method by using gas chromatography-electron capture detector |
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المؤلفون: | Nushrat Jahan Chowdhury, Md. Ahedul Akbor, Aynun Nahar, Md. Aftab Ali Shaikh |
المصدر: | Heliyon, Vol 10, Iss 14, Pp e34548- (2024) |
بيانات النشر: | Elsevier, 2024. |
سنة النشر: | 2024 |
المجموعة: | LCC:Science (General) LCC:Social sciences (General) |
مصطلحات موضوعية: | Liquid-liquid extraction, Water, Quality control, Quality assurance, Recovery, Science (General), Q1-390, Social sciences (General), H1-99 |
الوصف: | Organochlorine pesticides (OCPs) are persistent organic compounds found in aquatic environments worldwide. A well-validated and well-established analytical method is crucial for detecting OCPs in the environment. In this study, an analytical method for quantifying OCPs in water was developed and evaluated. Here, the range of linearity, reproducibility, uncertainty, specificity, method detection limits (MDL), and special emphasis on detection and quantitation limits were assessed. Recovery studies were performed to measure the accuracy and precision of the method. This method exhibited excellent linearity in the range of 2.5–20 μg/L for all compounds. As none of the targeted compounds was detected in the chromatograms of the blank sample with no baseline noise, the limits of detection (LOD) and limits of quantification (LOQ) were determined using the linear regression method, external calibration curve slope, and laboratory fortified blank-based detection. All compounds showed different LOD and LOQ values, depending on the approach used. In particular, endosulfan sulfate, methoxychlor, endrin ketone, H. epoxide, heptachlor, and 4,4ʹ-DDT exhibited high detection limits. The recovery percentage of the 15 compounds at 5 μg/L spiked concentration was between 50 and 150 %, which is consistent with the accuracy of the APHA method. Except for endosulfan sulfate, the relative standard deviations of all other compounds were below 20 %, indicating good precision. This method has also been applied to real water samples. This validation technique is reliable, sensitive, simple, rapid, easy to comprehend, and reproducible. The application of this method in the real water samples was also conducted. Only α-BHC and γ-Chlordane were detected in the water sample. |
نوع الوثيقة: | article |
وصف الملف: | electronic resource |
اللغة: | English |
تدمد: | 2405-8440 |
Relation: | http://www.sciencedirect.com/science/article/pii/S2405844024105798; https://doaj.org/toc/2405-8440 |
DOI: | 10.1016/j.heliyon.2024.e34548 |
URL الوصول: | https://doaj.org/article/5145eb038d0d4b5aad58f31c3bbf51a9 |
رقم الأكسشن: | edsdoj.5145eb038d0d4b5aad58f31c3bbf51a9 |
قاعدة البيانات: | Directory of Open Access Journals |
تدمد: | 24058440 |
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DOI: | 10.1016/j.heliyon.2024.e34548 |