Epidemiological analysis of pneumoconiosis in the Xinjiang Uygur Autonomous Region and cases reported by the Urumqi Railway Bureau

Liu, G T; Li, X J; Wei, Yang; Wei, Wenbin; Wang, X H; Yuan, He; Wufuer, H

doi:10.4238/2015.march.6.8

Cited by 3 publications

(1 citation statement)

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“…Oily sludge is a hazardous waste and its improper discharge can cause serious hazards [1][2][3][4], and the oil content is one of the important indicators to assess its pollution risk and whether it meets the discharge standards after treatment [5]. The results of oil content determination are affected by the type, composition and structure of the oily sludge, so it is important to choose different testing methods according to the characteristics of the oily sludge to determine its oil content accurately.…”

Section: Introductionmentioning

confidence: 99%

Comparisons of Azeotropic Distillation, Infrared Spectrophotometry and Ultraviolet Spectrophotometry for Oil Content Measurement

Li,

Wang,

Zhu

2023

Advances in Transdisciplinary Engineering

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At present, the huge output of oily sludge is seriously harmful to the environment, so it must be treated as resources and detoxification. Oil content is the key technical indicator in its treatment process. In this paper, azeotropic distillation, infrared spectrophotometry and ultraviolet spectrophotometry were used to determine the oil content of two kinds of oily sludge. The results show that the oil content of oil sludge OS-1 and OS-2 measured by azeotropic distillation method is 56.96(±2.65)% and 7.62(±0.63)%, respectively. Azeotropic distillation method is suitable for the three-phase determination of oil, water and residue in oily sludge, and provides basic parameters for the selection of oily sludge treatment method and oil content detection method. The oil content of OS-1 and OS-2 measured by ultraviolet spectrophotometry is only 14.78(±1.15)% and 3.16(±0.40)%, respectively. Ultraviolet spectrophotometry is suitable for the detection of oily sludge with unsaturated petroleum hydrocarbons as the main component. Infrared spectrophotometry can fully detect petroleum components, so infrared spectrophotometry is relatively reliable and can be widely used in experiments and production. This study provides theoretical basis and data support for the selection of oil content detection methods for different oily sludge.

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Section: Introductionmentioning

confidence: 99%

Comparisons of Azeotropic Distillation, Infrared Spectrophotometry and Ultraviolet Spectrophotometry for Oil Content Measurement

Li,

Wang,

Zhu

2023

Advances in Transdisciplinary Engineering

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China's dusty lung crisis: Rural-urban health inequity as social and spatial injustice

Liu

2019

Social Science & Medicine

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Evaluación de la exposición a polvo de carbón y sílice en minería subterránea en tres departamentos de Colombia

Varona¹,

Ibáñez-Pinilla²,

Briceño-Ayala³

et al. 2018

biomedica

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Introducción. La neumoconiosis de mineros de carbón es una enfermedad crónica e irreversible que se considera un problema de salud pública.Objetivo. Estimar la prevalencia de neumoconiosis y sus factores asociados en mineros de carbón en Boyacá, Cundinamarca y Norte de Santander.Materiales y métodos. Estudio de corte transversal en 476 mineros. Se realizó valoración médica, radiografía de tórax según criterios de la Organización Internacional del Trabajo, espirometrías e identificación de polimorfismos de glutation S transferasa y de enzimas de reparación. Las asociaciones entre condiciones ocupacionales y de la empresa con neumoconiosis fueron exploradas usando modelos de regresión de Cox.Resultados. En 31 empresas se realizaron 479 monitoreos ambientales y se evaluaron 476 trabajadores, con tiempo de trabajo entre 10 y 57 años. La prevalencia de neumoconiosis fue de 33.8% (IC 95%: 27,0%, 41,3%). En el modelo de regresión multivariable de Cox con tiempo de riesgo constante para la neumoconiosis, esta se asoció significativamente con trabajo en empresas medianas (RP = 2,00, IC 95%: 0,995, 2,690, p = 0,052), con nivel de exposición severa al polvo de carbón según el índice de exposición (RP = 2,055, IC 95%: 1,043, 4,048, p = 0,038), y con una antigüedad de 25 años o más (para 25,0-29,9 años: RP = 2,199, IC 95%: 1,449, 3,338, p = 0,001).Conclusiones. La prevalencia de neumoconiosis fue muy alta y se asoció a exposición a niveles severos de polvo de carbón, a exposición laboral mayor o igual a 25 años y a trabajar en empresas medianas.

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Epidemiological analysis of pneumoconiosis in the Xinjiang Uygur Autonomous Region and cases reported by the Urumqi Railway Bureau

Cited by 3 publications

References 20 publications

Comparisons of Azeotropic Distillation, Infrared Spectrophotometry and Ultraviolet Spectrophotometry for Oil Content Measurement

Comparisons of Azeotropic Distillation, Infrared Spectrophotometry and Ultraviolet Spectrophotometry for Oil Content Measurement

China's dusty lung crisis: Rural-urban health inequity as social and spatial injustice

Evaluación de la exposición a polvo de carbón y sílice en minería subterránea en tres departamentos de Colombia

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