| 1. | Municipal sewage . determination of mercury . cold atomic absorption photometry
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| 2. | Fruits juice and vegetables juice . determination of the lead content . flameless atomic absorption photometry
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| 3. | Fruits , vegetables and derived products . determination of the zinc content by means of atomic absorption photometry
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| 4. | Fruits , vegetables and derived products . determination of the iron content by means of atomic absorption photometry
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| 5. | Fruits , vegetables and derived products . determination of the lead content by means of flameless atomic absorption photometry
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| 6. | Fruits , vegetables and derived products . determination of the mercury content by means of flaneless atomic absorption photometry
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| 7. | Fruits , vegetables and derived products . determination of the mercury content by means of flameless atomic absorption photometry
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