Table 4 Surface composition of swabbed heritage PVC objects from CHSDM based on NPDPI-MS and description of observed surface exudates

1971-23-1-B, Sweating, yellowing, adhesive tape

1971

391.284

C₂₄H₃₈O₄

DEHP/DOTP

413.363

C₂₅H₄₈O₄

dioctyl azelate

299.258

C₁₈H₃₄O₃

hydroxyoctadecenoic acid

2019-29-20, NVE

1980-2010

391.284

C₂₄H₃₈O₄

DEHP/DOTP

377.326

C₂₁H₄₄O₅

1991-47-2, Sweating, yellowing, dust

1952

391.284

C₂₄H₃₈O₄

DEHP/DOTP

225.090

C₁₃H₁₁N₃O

drometrizole

225.09→ 196.08, 120.06, 154.06

Stabiliser and UV absorber. Ion present as [M⁺], product ions matching NIST GC-MS library reference.

413.363

C₂₅H₄₈O₄

dioctyl azelate

327.078

C₁₈H₁₅O₄P

triphenyl phosphate

327.08→ 233.04 (C₁₂H₁₀O₃P), 215.03 (C₁₂H₈O₂P)

fire retardant

464.374

464.37→ 391.28 (loss of C₄H₁₁N), 391.28 → 149.02, 279.16, 167.03 (MS³)

391.28 product ions match DEHP

464.299

2001-8-1-A, NVE

1997

391.284

C₂₄H₃₈O₄

DEHP/DOTP

2001-8-1-D, slight yellowing, NVE

1997

391.284

C₂₄H₃₈O₄

DEHP/DOTP

1969-165-1021, NVE

1957-1960

391.284

C₂₄H₃₈O₄

DEHP/DOTP

408.311

C₂₄H₄₁NO₄

1995-152, NVE

1971

391.284

C₂₄H₃₈O₄

DEHP/DOTP

1998-75-180, NVE

1968

391.284

C₂₄H₃₈O₄

DEHP/DOTP

1971-15-1, NVE

1956 (ca.)

391.284

C₂₄H₃₈O₄

DEHP/DOTP

2017-51-15-A, Sweating, dust

1985

391.284

C₂₄H₃₈O₄

DEHP/DOTP