Processes taking place in the graphite tube: Anion and matrix effects in atomic absorption spectrometry. II. Determination of mercury

Effects of ammonium nitrate on sensitivi

Effects of ammonium nitrate on sensitivity for determinations of copper, iron, and manganese in sea water by atomic absorption spectrometry with pyrolytically coated graphite tubes

✍ John R. Montgomery; Gary N. Peterson 📂 Article 📅 1980 🏛 Elsevier Science 🌐 English ⚖ 428 KB

Ammonium nitrate, used as a matrix modifier in sea-water analysis to eliminate the interference of sodium chloride, degrades the pyrolytic coating on graphite-furnace tubes. The initially increased sensitivities for copper, manganese and iron are maintained for up to 15 atomizations; there is then a