l. The average(GM, GSD) concentrations of formaldehyde by sampling methods were 0.11(4.43) ppm by 1M, 0.27(2.03) ppm by SS, and 0.29(2.04) ppm by PB, respectively. The concentrations

Page 1 <img data-url='document/l-the-averagegm-gsd-concentrations-of-formaldehyde-by-sampling-methods-were.html?page=1' data-page='1' class='cut-thumb lazyload' alt='Page 1: l. The average(GM, GSD) concentrations of formaldehyde by sampling methods were 0.11(4.43) ppm by 1M, 0.27(2.03) ppm by SS, and 0.29(2.04) ppm by PB, respectively. The concentrations' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader033.cupdf.com/reader033/viewer/2022053016/5f16ddd9d4dfde22e63a79a0/html5/thumbnails/1.jpg' width='140' height='200' /> Page 2 <img data-url='document/l-the-averagegm-gsd-concentrations-of-formaldehyde-by-sampling-methods-were.html?page=2' data-page='2' class='cut-thumb lazyload' alt='Page 2: l. The average(GM, GSD) concentrations of formaldehyde by sampling methods were 0.11(4.43) ppm by 1M, 0.27(2.03) ppm by SS, and 0.29(2.04) ppm by PB, respectively. The concentrations' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader033.cupdf.com/reader033/viewer/2022053016/5f16ddd9d4dfde22e63a79a0/html5/thumbnails/2.jpg' width='140' height='200' /> Page 3 <img data-url='document/l-the-averagegm-gsd-concentrations-of-formaldehyde-by-sampling-methods-were.html?page=3' data-page='3' class='cut-thumb lazyload' alt='Page 3: l. The average(GM, GSD) concentrations of formaldehyde by sampling methods were 0.11(4.43) ppm by 1M, 0.27(2.03) ppm by SS, and 0.29(2.04) ppm by PB, respectively. The concentrations' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader033.cupdf.com/reader033/viewer/2022053016/5f16ddd9d4dfde22e63a79a0/html5/thumbnails/3.jpg' width='140' height='200' /> Page 4 <img data-url='document/l-the-averagegm-gsd-concentrations-of-formaldehyde-by-sampling-methods-were.html?page=4' data-page='4' class='cut-thumb lazyload' alt='Page 4: l. The average(GM, GSD) concentrations of formaldehyde by sampling methods were 0.11(4.43) ppm by 1M, 0.27(2.03) ppm by SS, and 0.29(2.04) ppm by PB, respectively. The concentrations' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader033.cupdf.com/reader033/viewer/2022053016/5f16ddd9d4dfde22e63a79a0/html5/thumbnails/4.jpg' width='140' height='200' /> Page 5 <img data-url='document/l-the-averagegm-gsd-concentrations-of-formaldehyde-by-sampling-methods-were.html?page=5' data-page='5' class='cut-thumb lazyload' alt='Page 5: l. The average(GM, GSD) concentrations of formaldehyde by sampling methods were 0.11(4.43) ppm by 1M, 0.27(2.03) ppm by SS, and 0.29(2.04) ppm by PB, respectively. The concentrations' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader033.cupdf.com/reader033/viewer/2022053016/5f16ddd9d4dfde22e63a79a0/html5/thumbnails/5.jpg' width='140' height='200' /> Page 6 <img data-url='document/l-the-averagegm-gsd-concentrations-of-formaldehyde-by-sampling-methods-were.html?page=6' data-page='6' class='cut-thumb lazyload' alt='Page 6: l. The average(GM, GSD) concentrations of formaldehyde by sampling methods were 0.11(4.43) ppm by 1M, 0.27(2.03) ppm by SS, and 0.29(2.04) ppm by PB, respectively. The concentrations' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader033.cupdf.com/reader033/viewer/2022053016/5f16ddd9d4dfde22e63a79a0/html5/thumbnails/6.jpg' width='140' height='200' /> Page 7 <img data-url='document/l-the-averagegm-gsd-concentrations-of-formaldehyde-by-sampling-methods-were.html?page=7' data-page='7' class='cut-thumb lazyload' alt='Page 7: l. The average(GM, GSD) concentrations of formaldehyde by sampling methods were 0.11(4.43) ppm by 1M, 0.27(2.03) ppm by SS, and 0.29(2.04) ppm by PB, respectively. The concentrations' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader033.cupdf.com/reader033/viewer/2022053016/5f16ddd9d4dfde22e63a79a0/html5/thumbnails/7.jpg' width='140' height='200' /> Page 8 <img data-url='document/l-the-averagegm-gsd-concentrations-of-formaldehyde-by-sampling-methods-were.html?page=8' data-page='8' class='cut-thumb lazyload' alt='Page 8: l. The average(GM, GSD) concentrations of formaldehyde by sampling methods were 0.11(4.43) ppm by 1M, 0.27(2.03) ppm by SS, and 0.29(2.04) ppm by PB, respectively. The concentrations' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader033.cupdf.com/reader033/viewer/2022053016/5f16ddd9d4dfde22e63a79a0/html5/thumbnails/8.jpg' width='140' height='200' /> Page 9 <img data-url='document/l-the-averagegm-gsd-concentrations-of-formaldehyde-by-sampling-methods-were.html?page=9' data-page='9' class='cut-thumb lazyload' alt='Page 9: l. The average(GM, GSD) concentrations of formaldehyde by sampling methods were 0.11(4.43) ppm by 1M, 0.27(2.03) ppm by SS, and 0.29(2.04) ppm by PB, respectively. The concentrations' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader033.cupdf.com/reader033/viewer/2022053016/5f16ddd9d4dfde22e63a79a0/html5/thumbnails/9.jpg' width='140' height='200' /> Page 10 <img data-url='document/l-the-averagegm-gsd-concentrations-of-formaldehyde-by-sampling-methods-were.html?page=10' data-page='10' class='cut-thumb lazyload' alt='Page 10: l. The average(GM, GSD) concentrations of formaldehyde by sampling methods were 0.11(4.43) ppm by 1M, 0.27(2.03) ppm by SS, and 0.29(2.04) ppm by PB, respectively. The concentrations' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader033.cupdf.com/reader033/viewer/2022053016/5f16ddd9d4dfde22e63a79a0/html5/thumbnails/10.jpg' width='140' height='200' /> Page 11 <img data-url='document/l-the-averagegm-gsd-concentrations-of-formaldehyde-by-sampling-methods-were.html?page=11' data-page='11' class='cut-thumb lazyload' alt='Page 11: l. The average(GM, GSD) concentrations of formaldehyde by sampling methods were 0.11(4.43) ppm by 1M, 0.27(2.03) ppm by SS, and 0.29(2.04) ppm by PB, respectively. The concentrations' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader033.cupdf.com/reader033/viewer/2022053016/5f16ddd9d4dfde22e63a79a0/html5/thumbnails/11.jpg' width='140' height='200' />

l. The average(GM, GSD) concentrations of formaldehyde by sampling methods were 0.11(4.43) ppm by 1M, 0.27(2.03) ppm by SS, and 0.29(2.04) ppm by PB, respectively. The concentrations

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