TY - JOUR AU - Walter Miller AU - Franklin Guenther C2 - Analytical and Bioanalytical Chemistry DA - 2007-10-01 LA - en M1 - 387 PB - Analytical and Bioanalytical Chemistry PY - 2007 TI - The Certification of a Nominal 20 m¿ mol/mol H2S/N-2 Standard Reference Material Using Two Independent Methods ER -