Abstract
Economic operations carried out at Klaipeda State Seaport negatively affect the quality of the ambient air. To assess the atmosphere pollution in northern Klaipeda caused by economic operations at the Port, investigation was carried out from June to November. This paper surveys the influence of stevedoring and transportation of liquid and powdery fertilizers on the ambient air. Measurements of ammonia and phosphorus acid concentrations in the air showed that the concentrations and distribution of ammonia concentrations were for the most part influenced by meteorological conditions – the wind force and relative air humidity – as well as by transportation of liquid fertilizers. The largest excess of the maximum permissible concentration (MPC) of ammonia concentration was recorded in June: at daytime and in the evening it was higher 1,1 time, and at night – 2,2 times. In September, October and November ammonia concentrations in the ambient air did not exceed the MPC. Excess of phosphorus acid concentrations in the ambient air was detected in June (1,2 time at daytime) and July (at daytime and in the evening) in the closest proximity of the Liquid Fertilizer Transhipment Terminal.
Highlights
Klaipėda is a growing industrial city-port having more than 60 large enterprises [1]
Differences between ammonia concentrations recorded in areas I and II, difference between the time of the day and measuring period emerged due to changing meteorological conditions and operations related to liquid fertilizer transportation and transhipment
Ammonia maximum permissible concentration (MPC) excess was recorded during daytime, evening and night measurements in June
Summary
Klaipėda is a growing industrial city-port having more than 60 large enterprises [1]. KLASCO holds 6 terminals: general cargo, bulk mineral fertilizers, liquid fertilizers, grain, and Ro-Ro. With the aim to determine and assess pollution from the Port in the northern part of Klaipėda, the concentrations of ammonia, nitric and sulphuric dioxide, carbon monoxide, solid particles and phosphorus acid in the ambient air were measured [3, 4]. This paper surveys and analyses possible impact of economic activities at the Port on the ambient air – the distribution of ammonia and phosphorus acid in northern Klaipėda. These are the main emissions at the Port during the stevedoring operations of liquid and powdery fertilizers
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