FIELD: radiospectroscope of nuclear magnetic resonance (NMR); analytical chemistry. SUBSTANCE: solution under test is passed through sorbent which is then placed in relaxometer sensor for subsequent registration of NMR signal from surface of sorbent. Experimental of spin echo signal of protons is divided into exponential components and ratio of amplitude of NMR-relaxation signal of first components to sum of amplitudes of all components is used as analytical parameter; magnitude of ratio thus found is indicative of concentration of paramagnetic metals in solution. EFFECT: enhanced accuracy due to reduced effect of outside influence. 2 cl, 3 dwg, 2 tbl, 2 ex
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