Trace Metal Elements (Pb, Cd and As), 15N Nitrogen and Phosphorus Isotopes Accumulation in Three Varieties of Tomato from Conventional and Agro-Ecological Farming Systems in Burkina Faso

Christophe Dabiré; Abdoulaye Sérémé; Hermann Panandtigri; Abdoudramane Sanou; W. D. B. Aimée Guissou; Mamoudou H. Dicko

摘要

Tomato is a market gardening product that plays an important nutritional and economic role in Burkina Faso. However, the bad use of pesticides for its production could have negative impacts consumers’ health. The objective of the present study was to assess the concentration of trace metal elements (Pb, Cd and As), 15N isotopes (NO2-, NO3- style="font-family:Verdana;">, style="font-family:Verdana;"> NH₄^{+ style="font-family:Verdana;">) and phosphorus ( style="font-family:Verdana;">PO₄^{2- style="font-family:""> style="font-family:Verdana;">) in tomatoes according to cultivation practices. Thus, three tomato varieties (Mon> style="font-family:Verdana;">gal F1, F1 Cobra 26 style="font-family:Verdana;">and style="font-family:Verdana;"> Roma F1) were grown using organic and conventional production methods on 2 sites at Nongr Massom, (commune of Kadiogo province). The trace metal el style="font-family:Verdana;">ements were analyzed using atomic absorption spectrophotometry, the isotopes 15N ( style="font-family:Verdana;">NO₂^{- style="font-family:Verdana;">, style="font-family:Verdana;"> NO₃^{- style="font-family:Verdana;">, style="font-family:Verdana;"> NH₄^{+ style="font-family:Verdana;">) and phosphorus ( style="font-family:Verdana;">PO₄^{3- style="font-family:Verdana;">) using standardized methods. Tomatoes from conventional agriculture had higher levels of trace metal elements (0.163 style="font-family:""> style="font-family:Verdana;">- style="font-family:""> style="font-family:Verdana;">0.298 mg/Kg, 0.082 style="font-family:""> style="font-family:Verdana;">- style="font-family:""> style="font-family:""> style="font-family:Verdana;">0.146 mg/Kg style="font-family:Verdana;">and style="font-family:Verdana;"> 0.018 style="font-family:""> style="font-family:Verdana;">- style="font-family:""> style="font-family:""> style="font-family:Verdana;">0.032 mg/Kg respectively for Pb, Cd style="font-family:Verdana;">and style="font-family:Verdana;"> As) than those from organic agriculture samples. style="font-family:Verdana;">Concentration style="font-family:Verdana;"> of trace metal style="font-family:Verdana;"> is style="font-family:""> style="font-family:Verdana;"> lower for organic production with a reduction of 19.02%, 19.69% style="font-family:Verdana;">and style="font-family:Verdana;"> 20.77% for Pb, Cd style="font-family:Verdana;">and style="font-family:Verdana;"> As respectively compared to conventional production. High levels were recorded for the Roma F1 variety. The concentrations of trace metal elements in organic production are lower than the codex standards (2010) while those in conventional production are higher. These results could be due to the use of chemical inputs that could style="font-family:Verdana;">have a negative impact on style="font-family:Verdana;"> the nutritional quality of these tomatoes. The concentration of trace metal elements in tomato fruits is strongly correlated by production method and less by the variety (genetic).}}}}}}

机译：番茄是一家市场园艺产品，在布基纳法索发挥着重要的营养和经济作用。然而，对其生产的糟糕使用可能会产生负面影响消费者的健康。本研究的目的是评估痕量金属元素（Pb，Cd和As）的浓度（Pb，Cd和As），15n同位素（No2-，No3 - <跨度样式=“Font-Family：Verdana;”>，< / span> style =“font-family：verdana;”> nh _{4 ^{+ STYLE =“Font-Family：Verdana;”>）和磷（ style =“font-family：verdana;”> po _{4 ^{2 - style =”font-family：“”> <跨度样式=“font-family：verdana; verdana;”>）根据培养实践。因此，三种番茄品种（mon > style =“font-family：verdana;”> gal f1，f1 cobra 26 style =“font-family：Verdana;”>和< / span> <跨度样式=“Font-Family：Verdana;”> Roma F1）在非哥斯多摩（Kadiogo Province公社）的2个地点使用有机和常规生产方法生长。痕量金属EL < / span> <跨度样式=“font-family：verdana;”>使用原子吸收分光光度法分析了ex otopes 15n（ style =“font-family：verdana;”> no _{2 ^{- style =“font-family：verdana;”>， style =“font-family：verdana;”> no _{3 ^{- style =“font-family：verdana;”>， style =“font-family：verdana;”> NH _{4 ^{+ style =“font-family：verdana;”>）和磷（< / span> style =“font-family：verdana;”> po _{4 ^{3 - <跨度样式=“Font-Family：Verdana;”>）使用标准化方法。来自常规农业的西红柿具有更高的痕量金属元素（0.163 <跨度样式=“字体 - 家庭：”“> Style =”Font-Family：Verdana;“> - style =“font-family：”“”> style =“font-family：verdana;”> 0.298 mg / kg，0.082 style =“font-family：” “> style =”font-family：verdana;“> - style =”font-family：“”“> style =”font-family：“ “> <跨度样式=”font-family：verdana;“> 0.146 mg / kg style =”font-family：verdana;“> style =”font-family： Verdana;“> 0.018 style =”font-family：“”> style =“font-family：verdana;”> - <跨度样式=“字体家庭：”“> 样式=”font-family：“”> style =“font-family：verdana;”> 0.032 mg / kg分别用于Pb，cd <跨度样式=“font-family：verdana;”> style =“font-family：verdana;”> As）比来自有机农业样本的那些。 style =“font-family：verdana;”>浓度 style =“font-family：verdana;”>痕量金属 style = “Font-Family：Verdana;”>是样式=“font-family：”“> style =”font-family：verdana;“>降低有机生产，减少19.02％， 19.69％ style =“font-family：verdana;”> style =“font-family：verdana;”pb，cd <跨度样式> 20.77％ =“font-family：verdana;”>和 style =“font-family：verdana;”>与传统生产相比分别。为罗马F1品种记录高水平。痕量金属的浓度有机生产中的元素低于Codex标准（2010），而传统生产中的产品则较高。这些结果可能是由于使用的化学输入可能 <跨度样式=“font-family：verdana;” >对 <跨度样式=“font-family：verdana;”>这些西红柿的营养品质的负面影响。TRA的浓度番茄水果中的Ce金属元素通过生产方法强烈地相关，且遗传率较少（遗传）。}}}}}}}}}}}}

Trace Metal Elements (Pb, Cd and As), 15N Nitrogen and Phosphorus Isotopes Accumulation in Three Varieties of Tomato from Conventional and Agro-Ecological Farming Systems in Burkina Faso

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