The oil and gas industry plays a vital role in the global economy. The production process has several critical conditions and can expose metals to corrosion. Surfactants like the quaternary ammonium salt Benzyldimethyldodecylammonium Bromide (BDAC) are currently used to prevent corrosions; classical methods for determining these surfactants have problems in saline samples and usually present high costs. In this context, spectroscopic techniques become an excellent alternative for quaternary ammonium salts detection. Here, a SERS (surface-enhanced Raman scattering) sensor based on gold nanoparticles (AuNPs) synthesized through chemical reduction was used as an alternative method for BDAC detection. We detected BDAC at low concentrations in water solutions: at 5 to 30 ppm (1.47 × 10⁻⁵ mol L⁻¹ to 8.82 × 10⁻⁵ mol L⁻¹); and had the vibration attempt attribute analyzed. A new study of quaternary ammonium compounds using AuNPs and SERS with a different, easy, and repeatable approach to spectra acquisition is presented and shows to be a promising method applied in quaternary ammonium salt compounds detection for the oil and gas industry.

石油和天然气行业在全球经济中发挥着至关重要的作用。生产过程有几个关键条件，可能会使金属受到腐蚀。目前使用诸如季铵盐苄基二甲基十二烷基溴化铵 (BDAC) 等表面活性剂来防止腐蚀；测定这些表面活性剂的经典方法在盐水样品中存在问题，并且通常成本较高。在这种情况下，光谱技术成为季铵盐检测的绝佳替代方案。在这里，基于通过化学还原合成的金纳米颗粒 (AuNP) 的 SERS（表面增强拉曼散射）传感器被用作 BDAC 检测的替代方法。我们在水溶液中检测到低浓度的 BDAC：5 至 30 ppm（1.47 × 10 ^-5 mol L ^-1至 8.82 × 10 ^-5 mol L ^-1 ）；并对振动尝试属性进行了分析。提出了一项使用 AuNP 和 SERS 进行季铵化合物的新研究，采用不同的、简单且可重复的光谱采集方法，并表明该方法是应用于石油和天然气行业季铵盐化合物检测的有前途的方法。