Martins Elisandra C, Melo Vander De F, Abate Gilberto
a Department of Chemistry , Federal University of Paraná , Curitiba , PR , Brazil.
b Department of Soil Science , Federal University of Paraná , Curitiba , PR , Brazil.
J Environ Sci Health B. 2016 Sep;51(9):609-15. doi: 10.1080/03601234.2016.1181906. Epub 2016 May 18.
A method for determining atrazine in soil extracts was evaluated by flow injection analysis with spectrophotometric detection. The method is based on the reaction of atrazine with pyridine in an acid medium followed by the reaction with NaOH and sulfanilic acid. Several analytical conditions were previously studied and optimized. Under the best conditions of analysis, the limits of detection and quantification were 0.15 and 0.45 mg L(-1), respectively, for a linear response between 0.50 and 2.50 mg L(-1), and a sampling throughput of 21 determinations per hour. Using the standard addition method, the maximum relative standard deviation of 17% and recovery values between 80 and 100% were observed for three extracts from soil samples with different composition. The proposed method is simple, low-cost and easy to use, and can be employed for studies involving atrazine in soil samples or for screening of atrazine in soils.
采用流动注射分析-分光光度检测法对土壤提取物中阿特拉津的测定方法进行了评估。该方法基于阿特拉津在酸性介质中与吡啶反应，随后与氢氧化钠和磺胺酸反应。之前研究并优化了几个分析条件。在最佳分析条件下，对于0.50至2.50 mg L(-1)之间的线性响应，检测限和定量限分别为0.15和0.45 mg L(-1)，每小时的进样通量为21次测定。采用标准加入法，对三种不同成分土壤样品的提取物观察到最大相对标准偏差为17%，回收率在80%至100%之间。所提出的方法简单、成本低且易于使用，可用于涉及土壤样品中阿特拉津的研究或土壤中阿特拉津的筛选。
