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Table 1 Basic information of 16 detection points for Raman spectroscopy

From: Guangzhou Tongcao painting in late China Qing Dynasty (1840–1912 AD): technology revealed by analytical approaches

Number

Detection area

Color

1

Maid’s sleeve

Light blue

2

Maid’s collar

Deep blue

3

Back of chair

Bright green

4

Maid’s hair

Black

5

Table leg

Orange red

6

The horn of dragon pattern on hostess’s gown

White

7

Decorative pattern of floor

Light yellow

8

Back of chair

Yellow

9

The edge of vase

Deep yellow

10

The center of vase

Light yellow

11

Leaves of flowers in vase

Dark green

12

The mouth of dragon pattern on hostess’s gown

Red

13

Decorative pattern of floor

Blue

14

The lower hem of hostess’s gown

Red

15

Decorative pattern of floor

Blue

16

Decorative pattern of floor

Yellow