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項次 書目
1
題名:ANALYSIS OF ORGANIC AND CARBONATE CARBON IN SEDIMENTS    
沉積物含碳量分析方法之探討
著者:Feng-Yiing Chang(張豐穎) ;Shuh-Ji Kao(高樹基) ;Kon-Kee Liu(劉康克)
出版地區:台灣
出版城市:台北市
學科:地球科學
刊名:ACTA Oceanographica Taiwanica
卷期:27期(1991.9)
頁碼:140-150
語言:英語
摘要: 中文摘要PDF ; 英文摘要PDF

本研究測試碳質分析儀精密度與準確度,並比較四種分析總有機碳量酸化方法及兩種分析總無機碳量方法。結果顯示,研究所使用之碳質分析儀於分析沉積物標本總含碳量時,其精密度可達±0.006%C,準確度則優於±0.036%C。為測定總有機碳量而除去碳酸鹽之四方法中,以薰酸法所得之精密度最佳(±0.01%C),酸化後乾燥法之誤差略大(±0.025%C),但測值與上法相當一致,酸化後過濾一次法,所得測值偏低,顯然是損失了可溶性有機碳,而酸化後過濾兩次法,所得測值則偏高。故薰酸法是最佳之除去碳酸鹽方式,酸化後乾燥法則便於快速測定標本。測定總無機碳量方法中,常用的500℃除去有機碳方法會造成沉積物總無機碳量之低估,故測定總無機碳量時,可以將總碳量減去薰酸法之總有機碳量而求得。
Four methods were tested for determination of organic carbon in marine and riverine sediments. All methods discriminate organic and inorganic carbon by acidification and utilize an automated carbon analyzer (LECO-WR112) for carbon determination. Precision for total carbon analysis was ±0.006%C (using a sample size of 0.1 g) and accuracy was better than ±0.036%C. The technique using fuming HCl acidification is the most precise method with a precision of ±0.01%C. Oven- drying after 0.5 N HCl treatment resulted in measured values similar to the previous technique, but the precision (±0.025%C) was not as good. Analysis of organic carbon after acid leaching causes loss of acid-soluble organic carbon during carbonate dissolution, whereas additional filtration after neutralization of the filtrate causes positive error. Therefore the fuming HCl acidification is the best way to remove carbonates from sediments. Oven-drying after acid treatment is a faster and acceptable procedure. The widely used procedure for determination of total inorganic carbon (TIC) content by heating sample at 500℃ to remove organic carbon may cause serious underestimation. TIC may be determined indirectly by subtracting TOC from total carbon content.


    

本卷期目次
ACTA Oceanographica Taiwanica 27期 (1991.9)
A TOPOGRAPHIC AND MAGNETIC ANALYSIS OFF SOUTHEASTERN TAIWAN/ Chuen-Tien ShyuSong-Chuen Chen
THE INDICATION OF PALEOCEANOGRAPHY FROM CARBON AND OXYGEN ISOTOPE RECORDS OF HOLOCENE PLANKTONIC FORAMS IN SEDIMENT CORE OR216-17 OFF NORTHERN LUTAO, SOUTHEASTERN TAIWAN/ Ying-Tzung ShiehMin-Pen ChenChung-Ho Wang
CALIBRATION AND CORRECTION OF CTD TEMPERATURE AND SALINITY DATA/ C. T. LiuS. P. ChengS. C. Pai
ANALYSIS OF ORGANIC AND CARBONATE CARBON IN SEDIMENTS/ Feng-Yiing ChangShuh-Ji KaoKon-Kee Liu
VELOCITY STRUCTURE AND NATURE OF THE FOREARC BASIN OFF WEST SUMATRA FROM EXPANDING SPREAD EXPERIMENTS/ Char-Shine LiuGeorge G. Shor JrJoseph R. Curray
MORPHOLOGY AND POSSIBLE ORIGIN OF THE KAOPING SUBMARINE CANYON HEAD OFF SOUTHWEST TAIWAN/ Ho-Shing YuChang-Sheng HuangJuin-Wei Ku
A STUDY ON FLEXIBLE PIPE MECHANICS UNDER NEGATIVE HYDROSTATIC PRESSURE/ Shih-Hsing KangNai-Kuang Liang
A NONLINEAR ESTIMATION OF SELECTION CURVE OF 20 SPECIES OF FISH FROM NORTHWESTERN AUSTRALIAN WATERS BY MARQUARDT'S ALGORITHM/ Tai-Shiang WenShean-Ya YehHsi-Chiang Liu
ASSESSMENT ON THE RED SNAPPER (LUTJANUS ALTIFRONTALIS) RESOURCE IN THE WATERS OFF NORTHWEST AUSTRALIA/ Dar-Ren JuShean-Ya Yeh
PRELIMINARY CHECKLIST OF FISHES FROM THE WATERS AT TUNG-SHA TAO (PRATAS ISLAND), SOUTH CHINA SEA/ Li-Shu ChenKwang-Tsao ShaoLee-Shing FangLin-Tai Her
 
   
 
   

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