Departamento de Oceanografia e Limnologia, Universidade Federal Do Rio Grande Do Norte, Natal, Brazil.
Departamento de Oceanografia, Universidade Federal de Pernambuco, Recife, Brazil.
Environ Sci Pollut Res Int. 2022 Jul;29(32):48926-48936. doi: 10.1007/s11356-022-19134-w. Epub 2022 Feb 24.
Cigarette butts (CBs) are non-biodegradable residues of synthetic origin, prevalent on beaches all over the world. The study evaluates discarded CBs on an intensely used urban beach, determining variations in physical and chemical characteristics. CBs collected were observed, classified, and visually separated according to a proposed scale of four levels of degradation to test the potential match between physical and chemical decay. CBs (un-smoked, smoked, and discarded) were used to determine the average length (cm) and mass (g) in order to observe changes in these parameters among the levels. Cigarette butts experience consecutive mass loss during environmental exposure. Scanning electron microscopy (SEM) images were obtained to assess physical changes in fibers due to smoking. FTIR-ATR was used to assess CBs new (un-smoked), smoked, and discarded samples in relation to cellulose acetate decay. The FTIR-ATR spectroscopy of the most visually degraded cigarette butts indicated modifications in the spectra when compared to un-smoked cigarettes.
烟头（CBs）是由合成材料制成的不可生物降解的残余物，在世界各地的海滩上都很常见。本研究评估了一个高度使用的城市海滩上丢弃的 CBs，确定了其物理和化学特性的变化。收集到的 CBs 被观察、分类，并根据提出的四个降解水平的规模进行视觉分离，以测试物理和化学衰减之间的潜在匹配。使用未吸烟、吸烟和丢弃的香烟来确定平均长度（cm）和质量（g），以观察这些参数在水平之间的变化。香烟在环境暴露过程中会经历连续的质量损失。获得扫描电子显微镜（SEM）图像以评估纤维因吸烟而产生的物理变化。FTIR-ATR 用于评估新（未吸烟）、吸烟和丢弃的香烟与醋酸纤维素降解的关系。与未吸烟的香烟相比，最视觉降解的香烟的 FTIR-ATR 光谱表明光谱发生了变化。
