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Table 3 Spearman’s rank correlation coefficient (r) between concentrations of NBFRs in FD

From: Novel brominated flame retardants in house dust from Shanghai, China: levels, temporal variation, and human exposure

  PBT PBEB HBB EHTBB BTBPE BEHTEBP DBDPE
PBT   0.571** 0.031 − 0.055 0.095 0.012 0.031
PBEB 0.571**   0.203* − 0.061 0.085 − 0.022 0.109
HBB 0.031 0.203*   − 0.100 0.089 − 0.020 0.186*
EHTBB − 0.055 − 0.061 − 0.100   − 0.066 0.023 − 0.114
BTBPE 0.095 0.085 0.089 − 0.066   − 0.008 0.005
BEHTEBP 0.012 − 0.022 − 0.020 0.023 − 0.008   − 0.016
DBDPE 0.031 0.109 0.186* − 0.114 0.005 − 0.016  
  1. P < 0.05; ** P < 0.01