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Abstract
The concentration of twenty two elements in thirty plants had been determined using instrumental neutron activation analysis. These plants are commonly used, in Mexico, for medicinal purpose to treat different illnesses, conditions or discomfort (e.g., sterility, digestive problems, weakens, anxiety, depression, hair loss, cough, etc.). Except for Br, the concentration of the other elements measured are similar to those found in agriculture products of similar use. Eleven elements in all samples investigated showed similar elemental distribution pattern.