Table 2. Heavy-atom reactivity of the methionine-containing peptide.

Compounds with reduced solubility in particular buffer and pH conditions are indicated by .

	Sodium acetate		Sodium citrate			MES	Sodium cacodylate		HEPES		TrisHCl
pH	4.0	5.0	4.0	5.0	6.0	6.0	5.5	6.5	7.0	8.0	7.5	8.5
Platinum potassium thiocyanate	+++	++	+	+	+	++	++	++	++	++	++	+
Platinum potassium iodide						+
Potassium hexabromoplatinate(IV)	+++	+++	+++	++	++	+++	+++	++	++	++	++	++
Potassium tetrachloroplatinate(II)	+++	+++	+++	+++	+++	+++	+++	+++	+++	++	++	+
Potassium tetrabromoplatinate(II)	+++	+++	+++	+++	++	+++	+++	+++	++	++	+++	+++
Diamino platinum dinitrate	++	+++	+++	+++	+++	+++	+++	+++	+++	+++	+++	+++
Potassium tetranitroplatinate(II)	++	++	+	+++	+++	++	++	+++	++	+++	++	+++
Dichloro(ehylenediamine)platinum(II)	+	+		+	+	+	+	+	+	+	++	+
Potassium tetracyanoplatinate(II)						+
Ammonium tetrachloroplatinate(II)	++	+++	+++	+++	+++	+++	+++	+++	++	+++	+++	+++
Potassium hexachloroplatinate(IV)	+	+	+	+	+	+++	++	+	++	++
Potassium tetrachloroaurate(III)		+	++	++	+++	++	+	+	+++	+++		++
Sodium tetrachloroaurate(III)		++	++	++	+++	+++	+	++	+++	+++		++
Gold(III) chloride	+	+	+			+			++	++	-	-
Gold chloride		+					++	++			+	+
Gold sodium bromide						++			+	+
Potassium tetrabromoaurate(III)			+	+	++	++			+	+
Gold sodium thiosulfate			+	+	+	++			+	+	+	+
Gold(I) potassium cyanide						+
Gold potassium thiocyanide						+			+	+
Thiomersal	+	+	+	+	++	+		+	++	+
Mersalyl	+	+	+	+	+	++		+	+	++
Mercury(II) acetate	+	+++		+	+	+++			+	+	+	+
PCMBS			+	+	+	++	+		+	++	+	+
Potassium mercury tetraiodide				+	+	+			+	++		+
Methylmercury(II) chloride			+	+	+	++			+	+
Methylmercury(II) acetate	++	++	+	+	++	++			++	+++	+
Ethylmercury(II) phosphate	++	++	+	+	+	++			+	+++	++
Mercury(II) cyanide			+	+	+	+			+	+
Mercury(II) bromide			+	+	+	+			+	+
Mercury(II) chloride						++			+	+
Methylmercury(II) bromide			+	+	+
p-Chloromercuribenzoic acid			+	+	+	+			+	+
Ethylmercury(II) chloride			+	+	+	+			+	+
Mercury(II) iodide							+
Mercury(II) oxide			+	+	+	+
Potassium hexachloroiridate(III)		+	+	+	+	+	+	+	+	++	+	+
Potassium hexachloroosmiate(IV)	+	+	+	+	+	+	+	+	+	+	+	+