Fig. 20From: Microbial corrosion on underwater pottery relics with typical biological condensation diseasePL spectra. a The brownish-yellow corrosion regions on the surface of NH-1 at excitation of 222 nm and slit of 2 nm. b The black corrosion regions on the surface of CJK-1 at excitation of 220 nm and slit of 6 nmBack to article page