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| 1 | PM_(2.5)and water-soluble inorganic ion concentrations decreased faster in urban than rural areas in China显示文摘We investigated variations of PM_(2.5)and water-soluble inorganic ions chemical characteristics at nine urban and rural sites in China using ground-based observations.From 2015 to 2019,mean PM_(2.5)concentration across all sites decreased by 41.9μg/m~3with a decline of 46%at urban sites and 28%at rural sites,where secondary inorganic aerosol(SIAs)contributed to 21%(urban sites)and 17%(rural sites)of the decreased PM_(2.5).SIAs concentrations underwent a decline at urban locations,while sulfate(SO_(4)^(2–)),nitrate(NO_(3)^(–)),and ammonium(NH_(4)^(+))decreased by 49.5%,31.3%and 31.6%,respectively.However,only SO_(4)^(2–)decreased at rural sites,NO_(3)^(–)increased by 21%and NH_(4)^(+)decreased slightly.Those changes contributed to an overall SIAs increase in 2019.Higher molar ratios of NO_(3)^(–)to SO_(4)^(2–)and NH_(4)^(+)to SO_(4)^(2–)were observed at urban sites than rural sites,being highest in the heavily polluted days.Mean molar ratios of NH_(3)/NH_xwere higher in 2019 than 2015 at both urban and rural sites,implying increasing NH_xremained as free NH_(3).Our observations indicated a slower transition from sulfate-driven to nitrate-driven aerosol pollution and less efficient control of NO_(x)than SO_(2)related aerosol formation in rural regions than urban regions.Moreover,the common factor at urban and rural sites appears to be a combination of lower SO_(4)^(2–)levels and an increasing fraction of NO_(3)^(–)to PM_(2.5)under NH_(4)^(+)-rich conditions.Our findings imply that synchronous reduction in NO_(x)and NH_(3)emissions especially rural areas would be effective to mitigate NO_(3)^(–)-driven aerosol pollution. | Yangyang Zhang Aohan Tang Chen Wang Xin Ma Yunzhe Li Wen Xu Xiaoping Xia Aihua Zheng Wenqing Li Zengguo Fang Xiufen Zhao Xianlong Peng Yuping Zhang Jian Han Lijuan Zhang Jeffrey L.Collett Jr Xuejun Liu | 2022 | Journal of Environmental Sciences2022，34，12： | 2 |
| 2 | Triflavin,an Arg-Gly-Asp containingpeptide,inhibits cervical carcinoma (HeLa) cell-substratum adhesion through an RGDdependent mechanism显示文摘 | Sheu JR Lin CH Peng HC | 1994 | Peptides1994，15，8： | 1 |
| 3 | Evaluation of MAGE-1 and MAGE-3 as tumor-specific markers to detect blood dissemination of hepatocellular carcinoma cells显示文摘 | Mou DC Cai SL Peng JR | 2002 | Br J Cancer2002，86，1： | 1 |
| 4 | Crystal structure of bovine coronavirus spike pro- tein lectin domain 显示文摘 | Peng G Xu L Lin YL Chen L Pasquarella JR Holmes KV Li F | 2012 | J Biol Chem2012，287，41： | 1 |
| 5 | Expression of cancer/testis(CT)antigens in Chinese hepatocellular carcinoma and its correlation with clinical parameters显示文摘 | Peng JR Clien HS Mou DC | 2005 | Cancer Lett2005，219，2： | 1 |
| 6 | The treatment of irresectable liver tumors by pereutaneous targeted Ar-He eryoablation 显示文摘 | Wang SM Zhang JR Peng QP | 2000 | Int J Modern Cancer Ther2000，3，： | 1 |
| 7 | The treatment of irresectable liver tumors by percutaneous targeted Ar-He cryocablation显示文摘 | Wang SM Zhang JR Peng QP | | 0，，： | 1 |
| 8 | Lack of association of INS VNTR polymorphism with polycystie ovary syndrome: A meta- malysis显示文摘 | Song LY Luo JR Peng QL | 2014 | J Assist Reprod Genet2014，31，6： | 1 |
| 9 | Effect of chronic hypoxia on K + channels: regulation in human pulmonary vascular smooth muscle cells 显示文摘 | Peng W Hoidal JR Karwande SV | 1997 | Am J Physiol1997，272，41： | 1 |
| 10 | The preferential dopamine D3 receptor antagonist S33138 inhibits co-caine reward and cocaine-triggered relapse to drug-seeking behaviorin rats显示文摘 | Peng XQ Ashby CR Jr Spiller K Li X Li J Thomasson N | 2009 | Neuropharmacology2009，56，4： | 1 |
| 11 | The immunosuppressive tumor microenvironment in hepatocellular carcinoma显示文摘 | Pang YL Zhang HG Peng JR | | 0，，06： | 1 |
| 12 | Evaluation of MAGE-1 and MAGE-3 as tumour-specific markers to detect blood dissemination of hepatocellular carcinoma cells显示文摘 | Mou DC Cai SL Peng JR | 2002 | Br J Cancer2002，86，： | 1 |
| 13 | Regulation of Ca2+-activated K+ channels in pulmonary vascular smooth muscle cells:role of nitric oxide显示文摘 | Peng W Hoidal JR Farruhkh IS | 1996 | J Appl Physiol1996，81，3： | 1 |
| 14 | Evaluation of MAGE-1 and MAGE-3 as tumor-specific markers to detect blood dissemination of hepatocellular carcinoma cells 显示文摘 | Mou DC Cai SL Peng JR | 2002 | Br J Cancer2002，86，1： | 1 |
| 15 | Impact of N- acetylcysteine on neonatal cardiomyocyte ischemia - reperfusion injury 显示文摘 | Peng YW Buller CL Charpie JR | 2011 | Pediatr Res2011，70，： | 1 |
| 16 | ET-1 modulates Kcachannels activity and arterial tension in normoxic and hypoxic human pulmonary vasculature 显示文摘 | Peng W Michael JR Hoidal JR | 1998 | Am J Physiol1998，275，4： | 1 |
| 17 | Expression of cancer/testis (CT) antigens in Chinese hepatocellular carcinoma and its correlation with clinical parameters 显示文摘 | Peng JR Chen HS Mou DC | 2005 | Cancer Lett2005，219，2： | 1 |
| 18 | Evaluation of MAGE-1 and MAGE -3 as tumourspecific markers to detect blood dissemination of hepatocellular carcinoma ceus显示文摘 | Mou DC Cai SL Peng JR | 2002 | Br J Cancer2002，86，1： | 1 |
| 19 | Neuroprotective effect of Z-ligustilide against permanent focal ischemic damage in rats显示文摘 | Peng HY Du JR Zhang GY | 2007 | Biol Pharm Bu112007，30，2： | 1 |
| 20 | Evaluation of MAGE-1 and MAGE -3 as tumour-specific markers to detect blood dissemination of hepatocellular carcinoma cells显示文摘 | Mou DC Cai SL Peng JR | 2002 | Br J Cancer2002，86，1： | 1 |
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