Table 1: Samples analyzed by FT-IR in this study (The letters correspond to Figure 1. The numbers correspond to Figure 3a).
| Number | Sample names | Component | Number | Sample names | Component |
| a (43-45) | Upland cotton | Cellulose | a (46-48) | Upland cotton stem | Cellulose |
| b (34-36) | Pima cotton | Cellulose | b (37-39) | Pima cotton stem | Cellulose |
| c (25-27) | JD module wrap outer | Polyethylene | c (22-24) | JD module wrap middle | Polyethylene |
| c (19-21) | JD module wrap inner | Polyethylene | d (4-6) | Black plastic | Polyethylene |
| e (1-3) | Bale twine | Polypropylene | f (10-12) | Colored shopping bag | High-density polyethylene |
| g (52-54) | White shopping bag | High-density polyethylene | h (7-9) | Colored bale bag | Woven polypropylene |
| i (49-51) | White bale bag | Woven polypropylene | j (31-33) | Old module tarp | Woven polypropylene |
| k (28-30) | New module tarp | Woven polypropylene | l (13-15) | Hard green | Polyethylene terephthalate |
| m (16-18) | Hydraulic oil | Petroleum oil | n (40-42) | Spindle grease | Lubricating oil |