Source apportionment of sediment PAHs in the Pearl River Delta region (China) using nonnegative matrix factorization analysis with effective weighted variance solution

2013 ◽  
Vol 444 ◽  
pp. 401-408 ◽  
Author(s):  
Hai-yang Chen ◽  
Yan-guo Teng ◽  
Jin-sheng Wang ◽  
Liu-ting Song ◽  
Rui Zuo
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