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Pesticide Residue Determination In Shahr-E-Rey Tomatoes Using Quechers Method

Mahboubeh Yadolahi, Mehran Babri, Amir Abdolah, Amir Abdolah Mehrdad Sharif, Amin Mousavi, Amin Mousavi Khaneghah

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Abstract

In this study, pesticide residues in tomato products from Shahr-e-Rey farms were measured and investigated by QuEChERS modified method. This method was on the base of the sample preparation in few steps and high speed. Measurement of pesticide residues was carried out by gas chromatograph with electron capture detector. In this study, most of the pesticides showed a recovery in the range of 70% – 120%. Limit of detection (LOD) and limit of quantification (LOQ) for all pesticides were lower than 0.50 and 1.90 µg/kg respectively. chlorpyrifos was detected in studied samples at average concentration 3.22 µg/kg, which was lower than the Maximum Residue Limits (MRLs) of national standard. Results showed that mentioned method is a very useful method for studying pesticides residues in tomato.

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What this paper is about

In this study, pesticide residues in tomato products from Shahr-e-Rey farms were measured and investigated by QuEChERS modified method. This method was on the base of the sample preparation in few steps and high speed. Measurement of pesticide residues was carried out by gas chromatograph with electron capture detector. In this study, most of the pesticides showed a recovery in the range of 70% – 120%. Limit of detection (LOD) and limit of quantification (LOQ) for all pesticides were lower than 0.50 and 1.90 µg/kg respectively. chlorpyrifos was detected in studied samples at average concentration 3.22 µg/kg, which was lower than the Maximum Residue Limits (MRLs) of national standard. Results showed that mentioned method is a very useful method for studying pesticides residues in tomato.

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Available abstract

In this study, pesticide residues in tomato products from Shahr-e-Rey farms were measured and investigated by QuEChERS modified method. This method was on the base of the sample preparation in few steps and high speed. Measurement of pesticide residues was carried out by gas chromatograph with electron capture detector. In this study, most of the pesticides showed a recovery in the range of 70% – 120%. Limit of detection (LOD) and limit of quantification (LOQ) for all pesticides were lower than 0.50 and 1.90 µg/kg respectively. chlorpyrifos was detected in studied samples at average concentration 3.22 µg/kg, which was lower than the Maximum Residue Limits (MRLs) of national standard. Results showed that mentioned method is a very useful method for studying pesticides residues in tomato.

Key concepts: Quechers, Pesticide residue, Pesticide, Chlorpyrifos, Residue (chemistry), Detection limit, Electron capture detector, Maximum Residue Limit

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