不同类型水下焊接产生的金属基纳米颗粒对海洋微藻的影响

The Impact of Metal-Based Nanoparticles Produced by Different Types of Underwater Welding on Marine Microalgae.

作者信息

Pikula Konstantin, Kirichenko Konstantin, Chernousov Vladimir, Parshin Sergey, Masyutin Alexander, Parshina Yulia, Pogodaev Anton, Gridasov Alexander, Tsatsakis Aristidis, Golokhvast Kirill

机构信息

Polytechnical Institute, Far Eastern Federal University, 10 Ajax Bay, Russky Island, Vladivostok 690922, Russia.

Siberian Federal Scientific Centre of Agrobiotechnology, Centralnaya Str., Presidium, Krasnoobsk 633501, Russia.

出版信息

Toxics. 2023 Jan 22;11(2):105. doi: 10.3390/toxics11020105.

DOI:10.3390/toxics11020105

PMID:36850981

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9966890/

Abstract

Underwater wet welding is commonly used in joining pipelines and in underwater construction. Harmful and hazardous compounds are added to many flux-cored wires for underwater welding and cutting, and can have a negative impact on marine life. The specific objective of this study was to evaluate the aquatic toxicity of two suspension samples obtained using welding electrode and flux-cored wire in marine microalgae and . Growth rate inhibition, cell size, and biochemical changes in microalgae were evaluated by flow cytometry. The results of the bioassay demonstrated that the suspension obtained after welding with electrode had an acute toxic impact on diatomic microalgae , and both tested suspensions revealed chronic toxicity in this microalga with a 40% growth rate inhibition after exposure to 40-50% of prepared suspensions for 7 days. Red algae revealed tolerance to both suspensions caused by exopolysaccharide covering, which prevents the toxic impact of metal cations such as Al, Ti, Mn, Fe, and Zn, which are considered the main toxic components of underwater welding emissions.

摘要

水下湿法焊接常用于管道连接和水下施工。许多用于水下焊接和切割的药芯焊丝中添加了有害和危险化合物，这可能会对海洋生物产生负面影响。本研究的具体目标是评估使用焊条和药芯焊丝获得的两种悬浮液样品对海洋微藻的水生毒性。通过流式细胞术评估微藻的生长速率抑制、细胞大小和生化变化。生物测定结果表明，焊条焊接后获得的悬浮液对硅藻微藻有急性毒性影响，并且两种测试悬浮液在暴露于40%-50%的制备悬浮液7天后，对这种微藻均显示出慢性毒性，生长速率抑制40%。红藻由于其外多糖覆盖层而对两种悬浮液具有耐受性，这可防止铝、钛、锰、铁和锌等金属阳离子的毒性影响，这些金属阳离子被认为是水下焊接排放物的主要有毒成分。