Validation of the method for the determination of dithiocarbamates in fruits
Конференцијски прилог (Објављена верзија)
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Residues of active substances, which were frequently found in fruits and vegetables of market producers belonged to the dithiocarbamate group pesticide. According to their use dithiocarbamates belong to fungicides in terms dithiocarbamic acid. They are a group of compounds that exist as strong complexes with various metal ions, often in a polymeric form. This makes them difficult to analyse directly because of their limited solubility in most organic solvents. It is important to have a reliable method which enables the quick and simple detection of this group for official monitoring. This work reports a simple, rapid and sensitive method for the assessment residues dithiocarbamates in fruits. Dithiocarbamates were determined indirectly by measuring the amount of carbon disulfide (CS>) that is liberated by the chemical reaction. The fruit samples in undisturbed condition were heated with a solution of stannous (II) chloride and hydrochloric acid yielding carbon disulphide. Incurred carb...on disulfide (CS) are determined "head-space" technique of gas-chromatography with mass detector. Linearity was verified by using the solutions of carbon disulphide in acetone. A linear dynamic range was obtained over a range of concentrations from 0.02 to 0.12 mg/kg for carbon disulfide with correlation coefficient r > 0.995. The accuracy of the method was acceptable since the average recoveries measured at four fortification levels were in the range of 83-103% (n = 4). The precision of the developed procedure expressed as the relative standard deviations (RSDs) were lower than 3.7% in all cases. Quantification was based on external standard calibration curves made with spiked blankmatrices.
Кључне речи:
apple / validation / dithiocarbamates / GC-MSИзвор:
3rd International Conference Sustainable postharvest and Food Technolologies - INOPTEP 2013 and XXV National Conference Processing and Energy in Agriculture PTEP , Vrnjačka Banja, 21 April 2013, 2013, 292-292Издавач:
- Nacionalno drugtvo za procesnu tehniku i energetiku u poljoprivredi, Novi Sad
Колекције
Институција/група
FiVeRTY - CONF AU - Grahovac, Nada AU - Kondić-Špika, Ankica AU - Lazić, S. AU - Šunjka, D. AU - Jakšić, Snežana AU - Radović, B. PY - 2013 UR - http://fiver.ifvcns.rs/handle/123456789/3723 AB - Residues of active substances, which were frequently found in fruits and vegetables of market producers belonged to the dithiocarbamate group pesticide. According to their use dithiocarbamates belong to fungicides in terms dithiocarbamic acid. They are a group of compounds that exist as strong complexes with various metal ions, often in a polymeric form. This makes them difficult to analyse directly because of their limited solubility in most organic solvents. It is important to have a reliable method which enables the quick and simple detection of this group for official monitoring. This work reports a simple, rapid and sensitive method for the assessment residues dithiocarbamates in fruits. Dithiocarbamates were determined indirectly by measuring the amount of carbon disulfide (CS>) that is liberated by the chemical reaction. The fruit samples in undisturbed condition were heated with a solution of stannous (II) chloride and hydrochloric acid yielding carbon disulphide. Incurred carbon disulfide (CS) are determined "head-space" technique of gas-chromatography with mass detector. Linearity was verified by using the solutions of carbon disulphide in acetone. A linear dynamic range was obtained over a range of concentrations from 0.02 to 0.12 mg/kg for carbon disulfide with correlation coefficient r > 0.995. The accuracy of the method was acceptable since the average recoveries measured at four fortification levels were in the range of 83-103% (n = 4). The precision of the developed procedure expressed as the relative standard deviations (RSDs) were lower than 3.7% in all cases. Quantification was based on external standard calibration curves made with spiked blankmatrices. PB - Nacionalno drugtvo za procesnu tehniku i energetiku u poljoprivredi, Novi Sad C3 - 3rd International Conference Sustainable postharvest and Food Technolologies - INOPTEP 2013 and XXV National Conference Processing and Energy in Agriculture PTEP , Vrnjačka Banja, 21 April 2013 T1 - Validation of the method for the determination of dithiocarbamates in fruits EP - 292 SP - 292 UR - https://hdl.handle.net/21.15107/rcub_fiver_3723 ER -
@conference{ author = "Grahovac, Nada and Kondić-Špika, Ankica and Lazić, S. and Šunjka, D. and Jakšić, Snežana and Radović, B.", year = "2013", abstract = "Residues of active substances, which were frequently found in fruits and vegetables of market producers belonged to the dithiocarbamate group pesticide. According to their use dithiocarbamates belong to fungicides in terms dithiocarbamic acid. They are a group of compounds that exist as strong complexes with various metal ions, often in a polymeric form. This makes them difficult to analyse directly because of their limited solubility in most organic solvents. It is important to have a reliable method which enables the quick and simple detection of this group for official monitoring. This work reports a simple, rapid and sensitive method for the assessment residues dithiocarbamates in fruits. Dithiocarbamates were determined indirectly by measuring the amount of carbon disulfide (CS>) that is liberated by the chemical reaction. The fruit samples in undisturbed condition were heated with a solution of stannous (II) chloride and hydrochloric acid yielding carbon disulphide. Incurred carbon disulfide (CS) are determined "head-space" technique of gas-chromatography with mass detector. Linearity was verified by using the solutions of carbon disulphide in acetone. A linear dynamic range was obtained over a range of concentrations from 0.02 to 0.12 mg/kg for carbon disulfide with correlation coefficient r > 0.995. The accuracy of the method was acceptable since the average recoveries measured at four fortification levels were in the range of 83-103% (n = 4). The precision of the developed procedure expressed as the relative standard deviations (RSDs) were lower than 3.7% in all cases. Quantification was based on external standard calibration curves made with spiked blankmatrices.", publisher = "Nacionalno drugtvo za procesnu tehniku i energetiku u poljoprivredi, Novi Sad", journal = "3rd International Conference Sustainable postharvest and Food Technolologies - INOPTEP 2013 and XXV National Conference Processing and Energy in Agriculture PTEP , Vrnjačka Banja, 21 April 2013", title = "Validation of the method for the determination of dithiocarbamates in fruits", pages = "292-292", url = "https://hdl.handle.net/21.15107/rcub_fiver_3723" }
Grahovac, N., Kondić-Špika, A., Lazić, S., Šunjka, D., Jakšić, S.,& Radović, B.. (2013). Validation of the method for the determination of dithiocarbamates in fruits. in 3rd International Conference Sustainable postharvest and Food Technolologies - INOPTEP 2013 and XXV National Conference Processing and Energy in Agriculture PTEP , Vrnjačka Banja, 21 April 2013 Nacionalno drugtvo za procesnu tehniku i energetiku u poljoprivredi, Novi Sad., 292-292. https://hdl.handle.net/21.15107/rcub_fiver_3723
Grahovac N, Kondić-Špika A, Lazić S, Šunjka D, Jakšić S, Radović B. Validation of the method for the determination of dithiocarbamates in fruits. in 3rd International Conference Sustainable postharvest and Food Technolologies - INOPTEP 2013 and XXV National Conference Processing and Energy in Agriculture PTEP , Vrnjačka Banja, 21 April 2013. 2013;:292-292. https://hdl.handle.net/21.15107/rcub_fiver_3723 .
Grahovac, Nada, Kondić-Špika, Ankica, Lazić, S., Šunjka, D., Jakšić, Snežana, Radović, B., "Validation of the method for the determination of dithiocarbamates in fruits" in 3rd International Conference Sustainable postharvest and Food Technolologies - INOPTEP 2013 and XXV National Conference Processing and Energy in Agriculture PTEP , Vrnjačka Banja, 21 April 2013 (2013):292-292, https://hdl.handle.net/21.15107/rcub_fiver_3723 .