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Time resolved transient absorption spectroscopy has been used to determinequantum yields for electron photodetachment in 193 nm and (where possible) 248nm laser excitation of miscellaneous aqueous anions, includinghexacyanoferrate(II), sulfate, sulfite, halide anions (Cl-, Br-, and I-),pseudohalide anions (OH-, HS-, CNS-), and several common inorganic anions forwhich no quantum yields have been reported heretofore: SO3=, NO2-, NO3-, ClO3-and ClO4-. Molar extinction coefficients for these anions and photoproducts ofelectron detachment from these anions at the excitation wavelengths were alsodetermined. These results are discussed in the context of recent ultrafastkinetic studies and compared with the previous data obtained by productanalyses. We suggest using electron photodetachment from the aqueous halide andpseudohalide anions as actinometric standard for time-resolved studies ofaqueous photosystems in the UV.Comment: 41 page, 6 figures; supplement: 3 pages, 12 figures; to be submitted  to J. Phys. Chem.

the journal of physical chemistry. a/the journal of physical chemistry. a.

Electron Photodetachment from Aqueous Anions. 1. Quantum Yields for Generation of Hydrated Electron by 193 and 248 nm Laser Photoexcitation of Miscellaneous Inorganic Anions