| abstract |
To provide a lead concentration determination reagent which realizes accurate determination of the lead concentration of a sample solution in a simple manner with safety, even when the sample solution contains zinc ions, and a lead concentration determination method making use of the reagent. n The lead concentration determination reagent contains (A) a porphyrin derivative and (B) at least one species selected from among ethylenediamine-N,N′-dipropionic acid, ethylenediamine-N,N′-diacetic acid, and 1,6-diaminohexane-N,N,N′,N′-tetraacetic acid. |