Heritage Science

Table 2 The integral area ratios of the bending envelope to stretching envelope in the Raman spectra of the pristine glaze and the Si-rich layer (A₄₇₀/A₉₅₀) and the peak positions and integral area ratios of each component (Qⁿ) in the stretching envelope (A_Qⁿ/A₉₅₀)

From: Corrosion of glaze in the marine environment: study on the green-glazed pottery from the Southern Song “Nanhai I” shipwreck (1127–1279 A.D.)

Regions	A₄₇₀/A₉₅₀	Parameters	Q⁰	Q¹	Q²	Q³	Q⁴
Pristine glaze	0.18	Peak position	859	902	960	1001	–
Pristine glaze	0.18	A_Qⁿ/A₉₅₀	0.07	0.34	0.48	0.11	–
Si-rich layer	0.56	Peak position	855	900	955	995	1130
Si-rich layer	0.56	A_Qⁿ/A₉₅₀	0.07	0.23	0.26	0.26	0.20

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