中华劳动卫生职业病杂志
中華勞動衛生職業病雜誌
중화노동위생직업병잡지
CHINESE JOURNAL OF INDUSTRIAL HYGIENE AND OCCUPATIONAL DISEASES
2015年
4期
309-312
,共4页
耐火陶瓷纤维%粉尘%纤维计数浓度%总粉尘质量浓度
耐火陶瓷纖維%粉塵%纖維計數濃度%總粉塵質量濃度
내화도자섬유%분진%섬유계수농도%총분진질량농도
Refractory ceramic fiber%Dust%Fiber number concentration%Total dust mass concentration
目的 探讨耐火陶瓷纤维粉尘质量浓度与纤维计数浓度之间的定量换算关系.方法 选择耐火陶瓷纤维典型企业作为研究现场,采用定点长时间方式平行采集总粉尘质量浓度和纤维计数浓度样品53对.总粉尘质量浓度按GBZ/T 192.1-2007《工作场所空气中粉尘测定第1部分:总粉尘浓度》进行测定,纤维计数浓度采用滤膜/相差显微镜法进行测定.对两种浓度及其比值分别进行单变量分析,两种浓度相关分析采用Spearman等级相关,并拟合线性回归、对数曲线、多项式、幂函数、指数曲线模型.结果 总粉尘质量浓度(x)范围0.45～13.82 mg/m3,纤维计数浓度(y)范围0.01～ 1.04 f/ml,两者比值(x/y)范围4～158,三者均不服从正态分布(均P＜0.01).两种浓度呈正相关关系(rs=0.705 22,P＜0.0001),所拟合线性回归、对数曲线、多项式、幂函数和指数曲线模型的决定系数(R2)均较低,决定系数最高的是三项式曲线模型y=-0.001 1x3+0.0104x2+0.1014x-0.055 1(R2=0.684 8).结论 耐火陶瓷纤维的纤维计数浓度虽与总粉尘质量浓度呈正相关,但两种浓度之间无固定的回归关系,两者之间难以获得较稳定的转换系数,两种浓度相互不能替代.
目的 探討耐火陶瓷纖維粉塵質量濃度與纖維計數濃度之間的定量換算關繫.方法 選擇耐火陶瓷纖維典型企業作為研究現場,採用定點長時間方式平行採集總粉塵質量濃度和纖維計數濃度樣品53對.總粉塵質量濃度按GBZ/T 192.1-2007《工作場所空氣中粉塵測定第1部分:總粉塵濃度》進行測定,纖維計數濃度採用濾膜/相差顯微鏡法進行測定.對兩種濃度及其比值分彆進行單變量分析,兩種濃度相關分析採用Spearman等級相關,併擬閤線性迴歸、對數麯線、多項式、冪函數、指數麯線模型.結果 總粉塵質量濃度(x)範圍0.45～13.82 mg/m3,纖維計數濃度(y)範圍0.01～ 1.04 f/ml,兩者比值(x/y)範圍4～158,三者均不服從正態分佈(均P＜0.01).兩種濃度呈正相關關繫(rs=0.705 22,P＜0.0001),所擬閤線性迴歸、對數麯線、多項式、冪函數和指數麯線模型的決定繫數(R2)均較低,決定繫數最高的是三項式麯線模型y=-0.001 1x3+0.0104x2+0.1014x-0.055 1(R2=0.684 8).結論 耐火陶瓷纖維的纖維計數濃度雖與總粉塵質量濃度呈正相關,但兩種濃度之間無固定的迴歸關繫,兩者之間難以穫得較穩定的轉換繫數,兩種濃度相互不能替代.
목적 탐토내화도자섬유분진질량농도여섬유계수농도지간적정량환산관계.방법 선택내화도자섬유전형기업작위연구현장,채용정점장시간방식평행채집총분진질량농도화섬유계수농도양품53대.총분진질량농도안GBZ/T 192.1-2007《공작장소공기중분진측정제1부분:총분진농도》진행측정,섬유계수농도채용려막/상차현미경법진행측정.대량충농도급기비치분별진행단변량분석,량충농도상관분석채용Spearman등급상관,병의합선성회귀、대수곡선、다항식、멱함수、지수곡선모형.결과 총분진질량농도(x)범위0.45～13.82 mg/m3,섬유계수농도(y)범위0.01～ 1.04 f/ml,량자비치(x/y)범위4～158,삼자균불복종정태분포(균P＜0.01).량충농도정정상관관계(rs=0.705 22,P＜0.0001),소의합선성회귀、대수곡선、다항식、멱함수화지수곡선모형적결정계수(R2)균교저,결정계수최고적시삼항식곡선모형y=-0.001 1x3+0.0104x2+0.1014x-0.055 1(R2=0.684 8).결론 내화도자섬유적섬유계수농도수여총분진질량농도정정상관,단량충농도지간무고정적회귀관계,량자지간난이획득교은정적전환계수,량충농도상호불능체대.
Objective To explore the quantitative relationship between the dust mass concentration and fiber number concentration of refractory ceramic fibres.Methods A typical refractory ceramic fiber plant was selected as the study site.Fifty-three paired samples of total dust mass concentration and fiber number concentration were collected using the long-time fixed site mode.The total dust mass concentration was measured according to the GBZ/T 192.1-2007 (Measurement of dust in the air of workplace,part 1:Total dust concentration).Membrane filter method/phase-contrast optical microscopy was used to determine the fiber number concentration.Univariate analysis was used to describe the distribution of the two concentrations and their ratio.Spearman rank correlation,as well as linear regression,logarithmic curve,polynomial,power function,and exponential curve model,were used to explore the relationship between the two concentrations.Results The range of the total dust mass concentration (x) was 0.45～13.82 mg/m3.The range of the fiber number concentration (y) was 0.01-1.04 f/ml.The range of the ratio (x/y) was 4～158.All of the three parameters did not follow normal distribution (P＜0.000 1).The two concentrations showed a positive correlation (rs=0.705 22,P＜ 0.000 1).All the coefficients of determination (R2) of linear regression,logarithmic curve,polynomial,power function,and exponential curve model were relatively low.The trinomial curve model had the highest R2 (0.6848) and the fitted equation was y=-0.001 1x3+0.010 4x2+0.101 4x-0.055 1.Conclusion There is a positive correlation between the total dust mass concentration and fiber number concentration of refractory ceramic fibers.However,there is no fixed regression relationship between the two concentrations,and neither is a definite coefficient which can be used to convert each other.The two concentrations cannot be replaced by each other.
