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Elmalarda Chlorpyrifos’un QuEChERS Analiz Yöntemi ile Metot Validasyonu

Authors: DURMAZ, Ahmet; TİRYAKİ, Osman;

Elmalarda Chlorpyrifos’un QuEChERS Analiz Yöntemi ile Metot Validasyonu

Abstract

QuEChERS metodu ile “Golden Delicious” ve “Starking Delicious” elma çeşitlerinde chlorpyrifos etken maddenin kalıntı analizi için 0.05, 0.5 ve 5.0 mg/kg seviyelerinde zenginleştirme yapılarak validasyon gerçekleştirilmiştir. Analizler yapıldıktan sonra LC-MS/MS kullanılarak kromatografik ayrıştırma yapılmıştır. Matris etkisini elimine etmek için matrisli kalibrasyon (MC) kullanılmıştır. Bu yüzden, MCGolden D ve MCStarking D kalibrasyonları kullanılmıştır. Metodun validasyonu, gerçeğe yakınlık (accuracy), kalibrasyonun doğrusallığı, geri alım, cihaz dedeksiyon limiti, metodun tespit limiti, tekrar edilebilirlik ve kesinlik gibi kriterler ile gerçekleştirilmiştir. Her iki çözücü kalibrasyon kurvesi ve her iki matris kalibrasyon eğrisi 5-200 pg/µl aralığında lineer olarak bulunmuştur. Golden D örneğinden geri alımı; %8.36-14.03 tekrar edebilirlik değerleri ile %70.87-112.99 arasında bulunmuştur (ortalama geri alım %89.32). Starking D elma örneği için ise geri alım; %1.96-12.88 tekrar edebilirlik değerleri ile %69.08-100.3 arasında bulunmuştur (ortalama geri alım %79.82). Tüm metodun geri alımı %15.68 relatif standart sapma ile %84.60 olarak bulunmuştur. Tüm bulgular olması gereken geri alım sınırlarına (%70-120) ve tekrar edebilirlik kabul oranı için belirtilen değerlere (RSD ≤% 20) uygundur.

Country
Turkey
Related Organizations
Keywords

Engineering, matris etkisi;metot geçerliliği;pestisit kalıntısı;QuEChERS, Mühendislik, matrix effect;method validation;pesticide residue;QuEChERS

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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