determination of mineral elements in soil, citrus limunum juice and citrus limetta juice samples by flame photometry and atomic absorption spectrometry methods

a number of researches have been performed in the field of elemental analysis of fruitsfrom different areas of iran and there is a vast unstudied area in this field. in this study, seven mineral elements such as na, k, ca, mg, fe, zn and cu in the tree soil, citrus limunum juice of gorgan and iranshahr gardens and citrus limetta juice of gorgan and bandarabas gardens were determined by flame photometry and atomic absorption spectrometry methods using standard addition technique. the results showed that the concentration of k and cu elements in the samples of fruits was higher and lower than other elements, respectively. the concentration of na and k elements in the citrus limetta sample of bandarabas was more than that of the gorgan sample. the concentration of fe and mg elements in the citrus limunum sample of gorgan was more than that of the iranshahr sample. the measurments showed that the concentration of ca and zn elements in the tree soil samples of citrus limunum, was higher and lower than the other elements, respectively. moreover, although the concentration of the ca element in the soil sample of gorgan was more than that of iranshahr, the concentration of this element in the citrus limunum of gorgan was less than that of iranshahr, this is probably due to problems in the ca absorption of the citrus limunum plant of gorgan. the obtained information in this study can be useful for some patients in the preferred consumption of these kinds of fruits. in addition, the used methods are reliable and simple analytical procedures for the mineral element characterisation of citrus limunum and citrus limetta fruits.