Visualization and mapping of literature on the scientific analysis of wall paintings: a bibliometric analysis from 2011 to 2021

Heritage Science

Table 5 The top 30 keywords of scientific analysis of murals (ranking by frequency)

Rank	Keyword	Frequency	Links	Total link strength
1	Pigment	254	122	1303
2	Wall painting	244	123	1128
3	Raman spectroscopy	213	120	1134
4	Identification	143	116	829
5	Spectroscopy	123	103	653
6	Painting	88	84	307
7	Cultural heritage	86	92	383
8	Conservation	85	104	414
9	FT-IR	76	88	390
10	Mural paintings	70	91	302
11	SEM-EDS	62	87	327
12	XRD	61	87	361
13	Art	55	80	279
14	Rock art	53	52	197
15	XRF	51	82	286
16	Archaeology	40	63	174
17	Mortar	37	67	168
18	Minerals	35	58	200
19	Degradation	33	50	152
20	Spain	33	63	178
21	Biodeterioration	31	45	138
22	Microscopy	31	63	183
23	Deterioration	30	54	143
24	Egyptian blue	28	48	140
25	Hematite	27	54	166
26	Roman	25	52	144
27	in-situ	24	63	149
28	Roman wall paintings	23	56	132
29	Consolidation	21	35	94
30	Plaster	20	41	81

Link strength is the number of publications in which two keywords occur together